2bular NA Evora Exhaust System - Page 5 - LotusTalk - The Lotus Cars Community
 
LotusTalk.com is the premier Lotus Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 01-29-2013, 10:23 AM   #81 (permalink)
Registered User
 
Julian73's Avatar
 
Join Date: Oct 2011
Location: Longview, Texas
Posts: 2,746
Garage
Personally I think the K&N's are a pain in the ass to clean and reuse. Nice to know that a clean OEM paper filter is just as good.

I am surprised that the extra weight and complexity of the two-path muffler buys nothing but a better sound; that means so much restriction up stream that nothing left to gain. Wish I had the 2ublar downpipe in place to remove one more more variable between our systems, but with what I got, I believe your 5% gain from hardware beat my gains if the tune was backed out. I believe this is the most expensive Hp I have ever purchased. When I get the old parts back home to the same scale I can see how many ounces I saved.
__________________
'12 Evora S GP Special Edition #1/14 with BOE-KomoTec Stage 1++ (BOE CAI, Custom BOE Tune and Larini Sport on top of KomoTec Stage 1), MS Oil Sump
Lotus Driving Academy Level 3 School 1:1 w/ Ed Morris @ Hethel
New to piston power, my track toys have Rotaries

Last edited by Julian73; 01-29-2013 at 10:46 AM.
Julian73 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-29-2013, 10:36 AM   #82 (permalink)
Registered User
 
Julian73's Avatar
 
Join Date: Oct 2011
Location: Longview, Texas
Posts: 2,746
Garage
Don thank you for the support, you gave me moral support and indirectly through your prior install at VSA we had them on the phone a few times to discuss hardware idiosyncrasies.

Quote:
Originally Posted by Allan Gibbs View Post
... On a side note, I've heard that TDI is coming out with a CAI or a TDI filter option that attaches to the Radium. ..
I have been reading this on the other forum. I have turned gun shy on the CAI and don't think 3, 7 or 14 Hp is worth the trouble and risks. I see the Radium AFR curves all over the place, wouldn't be so bad if it was static and could be tuned out, but I understand it is dynamic due to vortex shedding. If TDI steadies the flow, that would be great, but as I say with the risks I would not install a CAI without dyno testing and tuning so a few hundred dollar upgrade can go well over a thousand.

Kold-fire tunes are de-riching these cars quite a bit, and I suspect that Lotus is using the super rich settings to cool the intact charge, in lieu of an intercooler; I have no margin to have a fluctuating AFR go lean.
__________________
'12 Evora S GP Special Edition #1/14 with BOE-KomoTec Stage 1++ (BOE CAI, Custom BOE Tune and Larini Sport on top of KomoTec Stage 1), MS Oil Sump
Lotus Driving Academy Level 3 School 1:1 w/ Ed Morris @ Hethel
New to piston power, my track toys have Rotaries

Last edited by Julian73; 01-29-2013 at 10:50 AM.
Julian73 is offline   Reply With Quote
Old 01-29-2013, 10:40 AM   #83 (permalink)
Plug Whisperer
 
turbophil's Avatar
 
Join Date: Dec 2005
Location: Kansas City/ Overland Park
Posts: 5,327
Images: 6
Thought I'd chime in...

The tune certainly made the most dyno difference on a repeatable basis. I think it's possible there's power to be had in longer headers, aftermarket DP, and eliminating the cat.

I didn't measure pre-rotor vacuum, but I'm pretty sure there's power to be found upstream of the throttle body, but would need the proper design to utlize the MAF correctly... if I had more time with the car, I could make this with the correct compoents and design...

One thing that cannot be ignored is the sound. The new headers and cat sound fantastic. I hear a lot of nice exhaust notes and short of ultra high-end italians with flat cranks, this car sounds on par with about anything out there. It's restrained but very bold at the same time. It's really quite impressive. Perhaps the exhaust didn't make much in the way of power, but it really will improve the ownership experience, IMO. There's also the benefit of much less exhaust heat in an engine compartment that really needs all the help it can get in heat mgmt...Julian brought us the parts, so no dog in the hunt on the exhaust parts. After hearing Julian's car, if it were my car, I'd dump the stock echaust upstream of the muffler as well-- regardless of power gain.

2 more pennies...

Phil
__________________

Phil: NASA 2012 and 2014 TT1 Central Champion, 2005 GG Elige, Rev400, 400+whp

2011 Pearl White Evora, BOE Skunk Works || 2005 GG Elise, Rev400, Street Car || 2006 CO Elise, Rev400, Steet Car


www.boefab.com: Lotus Performance Engineering and Service Specialists

BOE ClamHinge | BOE TVS SuperCharging, The Most Powerful Track-Worthy Forced Induction | EFI Engine Management | BOE The Essential Fuel Starve Solution| BOE Lotus Tow Package| BOE New-Tech Lotus Race Engines | The Right Oil Filter for Your Lotus | Custom Lotus ECU Tuning


Engineering & Innovation by Lotus People For Lotus People
Somethin ain't worth do'n, if it ain't worth do'n right
turbophil is offline   Reply With Quote
Old 01-29-2013, 10:55 AM   #84 (permalink)
Registered User
 
Julian73's Avatar
 
Join Date: Oct 2011
Location: Longview, Texas
Posts: 2,746
Garage
I will add to Phil's excellent comments that the power gain looks usable. It is smooth and has increased torque from off idle to redline, no dips and peaks. A full curve is better than a power peak any day. I don’t fly up to get my car till Friday so I must take his word on the sounds, the video doesn’t do it justice. I would do the switch again; I just cannot stand looking at those Camry exhaust manifolds.
__________________
'12 Evora S GP Special Edition #1/14 with BOE-KomoTec Stage 1++ (BOE CAI, Custom BOE Tune and Larini Sport on top of KomoTec Stage 1), MS Oil Sump
Lotus Driving Academy Level 3 School 1:1 w/ Ed Morris @ Hethel
New to piston power, my track toys have Rotaries
Julian73 is offline   Reply With Quote
Old 01-29-2013, 11:24 AM   #85 (permalink)
Registered User
 
invictusmaneo's Avatar
 
Join Date: Oct 2010
Location: Tampa, FL
Posts: 1,879
looks good, at least consistent.

Phil have you had luck on the 290 tune leaning out the factory AFR reliably?

It seems as if messing with the factory MAF/MAF tube can throw it all off.


Either way-the new headers certainly do look much better than the OEM junk
invictusmaneo is offline   Reply With Quote
Old 01-29-2013, 03:09 PM   #86 (permalink)
Registered User
 
Join Date: Jul 2011
Location: Shirley, MA
Posts: 79
I have to ask how come the dyno plots don't go to 7200 RPM which is the red line in sport mode? It seems that after the mods that the car could have pulled more RPM than the 6600 shown.
__________________
2011 Evora S 2+2, Storm Ti/Oyster, Diamond Cut Wheels, Tech Pack
Fast_XC is offline   Reply With Quote
Old 01-29-2013, 03:34 PM   #87 (permalink)
Registered User
 
Julian73's Avatar
 
Join Date: Oct 2011
Location: Longview, Texas
Posts: 2,746
Garage
Quote:
Originally Posted by Fast_XC View Post
I have to ask how come the dyno plots don't go to 7200 RPM which is the red line in sport mode? It seems that after the mods that the car could have pulled more RPM than the 6600 shown.
Note my statement of parameters, those curves are with sport mode OFF.
__________________
'12 Evora S GP Special Edition #1/14 with BOE-KomoTec Stage 1++ (BOE CAI, Custom BOE Tune and Larini Sport on top of KomoTec Stage 1), MS Oil Sump
Lotus Driving Academy Level 3 School 1:1 w/ Ed Morris @ Hethel
New to piston power, my track toys have Rotaries
Julian73 is offline   Reply With Quote
Old 01-29-2013, 04:40 PM   #88 (permalink)
Plug Whisperer
 
turbophil's Avatar
 
Join Date: Dec 2005
Location: Kansas City/ Overland Park
Posts: 5,327
Images: 6
In the case of a 2 wheel dyno like ours, the ABS and Vehicle stability systems trigger a fault, thus disabling Sport mode. This situation cures itself after a short drive. Peak hp numbers would be higher even though torque is falling off a cliff if we revved the motor higher in both stock and modified configurations, but there's not much point in revving the motor just for the sake of revving it...

Cheers,

Phil
__________________

Phil: NASA 2012 and 2014 TT1 Central Champion, 2005 GG Elige, Rev400, 400+whp

2011 Pearl White Evora, BOE Skunk Works || 2005 GG Elise, Rev400, Street Car || 2006 CO Elise, Rev400, Steet Car


www.boefab.com: Lotus Performance Engineering and Service Specialists

BOE ClamHinge | BOE TVS SuperCharging, The Most Powerful Track-Worthy Forced Induction | EFI Engine Management | BOE The Essential Fuel Starve Solution| BOE Lotus Tow Package| BOE New-Tech Lotus Race Engines | The Right Oil Filter for Your Lotus | Custom Lotus ECU Tuning


Engineering & Innovation by Lotus People For Lotus People
Somethin ain't worth do'n, if it ain't worth do'n right
turbophil is offline   Reply With Quote
Old 01-29-2013, 09:36 PM   #89 (permalink)
*
 
shay2nak's Avatar
 
Join Date: Dec 2003
Location: Calipornia
Posts: 22,275
Was there a change in the AFR between the stock and K&N filters?
__________________
** save ~10 lbs gain 1 hp ** EQ: Y=(190*X) / (1984-X) where Y is (HP) and X is (lbs)

'07 Lotus Exige S310


WTC 2
shay2nak is offline   Reply With Quote
Old 01-29-2013, 09:37 PM   #90 (permalink)
Plug Whisperer
 
turbophil's Avatar
 
Join Date: Dec 2005
Location: Kansas City/ Overland Park
Posts: 5,327
Images: 6
Quote:
Originally Posted by shay2nak View Post
Was there a change in the AFR between the stock and K&N filters?
None
__________________

Phil: NASA 2012 and 2014 TT1 Central Champion, 2005 GG Elige, Rev400, 400+whp

2011 Pearl White Evora, BOE Skunk Works || 2005 GG Elise, Rev400, Street Car || 2006 CO Elise, Rev400, Steet Car


www.boefab.com: Lotus Performance Engineering and Service Specialists

BOE ClamHinge | BOE TVS SuperCharging, The Most Powerful Track-Worthy Forced Induction | EFI Engine Management | BOE The Essential Fuel Starve Solution| BOE Lotus Tow Package| BOE New-Tech Lotus Race Engines | The Right Oil Filter for Your Lotus | Custom Lotus ECU Tuning


Engineering & Innovation by Lotus People For Lotus People
Somethin ain't worth do'n, if it ain't worth do'n right
turbophil is offline   Reply With Quote
Old 01-31-2013, 08:06 PM   #91 (permalink)
Registered User
 
Bobsy Racer's Avatar
 
Join Date: Apr 2010
Location: San Diego, CA
Posts: 555
Quote:
Originally Posted by turbophil View Post
In the case of a 2 wheel dyno like ours, the ABS and Vehicle stability systems trigger a fault, thus disabling Sport mode. This situation cures itself after a short drive. Peak hp numbers would be higher even though torque is falling off a cliff if we revved the motor higher in both stock and modified configurations, but there's not much point in revving the motor just for the sake of revving it...

Cheers,

Phil
Phil,

When we did the Dyno work on my NA Evora, before and after my 2bular Header-Downpipe-Metallic Cat installation, we were able to use the Sport Mode on a 2 wheel dyno. We did some sequence of hitting the Sport Mode button, and the Traction Control button multiple times, and then it worked fine, and revved to 7,100 RPM. (See my Dyno sheets in post # 31 of this thread.)

Looking at Julian's Dyno results, it looks like I definitely need to add your ECU tune to my installation !
Bobsy Racer is offline   Reply With Quote
Old 02-02-2013, 10:10 PM   #92 (permalink)
Registered User
 
Julian73's Avatar
 
Join Date: Oct 2011
Location: Longview, Texas
Posts: 2,746
Garage
Time to look at the BOE CAI setup.

BOE Evora CAI
__________________
'12 Evora S GP Special Edition #1/14 with BOE-KomoTec Stage 1++ (BOE CAI, Custom BOE Tune and Larini Sport on top of KomoTec Stage 1), MS Oil Sump
Lotus Driving Academy Level 3 School 1:1 w/ Ed Morris @ Hethel
New to piston power, my track toys have Rotaries
Julian73 is offline   Reply With Quote
Old 08-17-2013, 09:23 AM   #93 (permalink)
Myx
Registered User
 
Myx's Avatar
 
Join Date: May 2010
Location: USA - Delaware
Posts: 19
Wondering if the header will fit a 2010 3.5ltr RAV4 V6 with AWD.
__________________
Kevin
2010 Toyota RAV4 Sprt
AKA Lotus Evora SUV
13.717@99.57mph
http://img32.imageshack.us/img32/659...av4v6times.jpg
Myx is offline   Reply With Quote
Old 08-17-2013, 10:18 AM   #94 (permalink)
Registered User
 
Julian73's Avatar
 
Join Date: Oct 2011
Location: Longview, Texas
Posts: 2,746
Garage
Quote:
Originally Posted by Myx View Post
Wondering if the header will fit a 2010 3.5ltr RAV4 V6 with AWD.
Only way to see is to try. That said, packaging within Evora is probably much tighter than in RAV4, also rather expensive headers compared to most markets. Check toy parts lists, if manifolds are same between carry and rather should fit as evora OEM uses carry ex manifold and thus space restrictions and flange positions.
__________________
'12 Evora S GP Special Edition #1/14 with BOE-KomoTec Stage 1++ (BOE CAI, Custom BOE Tune and Larini Sport on top of KomoTec Stage 1), MS Oil Sump
Lotus Driving Academy Level 3 School 1:1 w/ Ed Morris @ Hethel
New to piston power, my track toys have Rotaries

Last edited by Julian73; 08-17-2013 at 01:19 PM.
Julian73 is offline   Reply With Quote
Old 08-17-2013, 12:35 PM   #95 (permalink)
Registered User
 
squidward's Avatar
 
Join Date: Mar 2010
Location: .
Posts: 5,456
Images: 19
Quote:
Originally Posted by Myx View Post
Wondering if the header will fit a 2010 3.5ltr RAV4 V6 with AWD.
Unlike other bolt-ons, headers are designed for a specific chassis. So, no, it won't fit. The 2GR in the RAV4 and other cars like the Camry have a different mount orientation than the Evora, which is traversely mounted. It would be silly to just 'try' something like this... Either you know it fits or it doesn't fit.
squidward is offline   Reply With Quote
Old 08-17-2013, 01:22 PM   #96 (permalink)
Registered User
 
Julian73's Avatar
 
Join Date: Oct 2011
Location: Longview, Texas
Posts: 2,746
Garage
Quote:
Originally Posted by squidward View Post
Unlike other bolt-ons, headers are designed for a specific chassis. So, no, it won't fit. The 2GR in the RAV4 and other cars like the Camry have a different mount orientation than the Evora, which is traversely mounted. It would be silly to just 'try' something like this... Either you know it fits or it doesn't fit.
Engine in evora is camry long block inclusive of ex manifolds, rav uses same block same engine mounts but could (unlikely)use a different set of ex manifolds. As stated above confirm W toyo parts
__________________
'12 Evora S GP Special Edition #1/14 with BOE-KomoTec Stage 1++ (BOE CAI, Custom BOE Tune and Larini Sport on top of KomoTec Stage 1), MS Oil Sump
Lotus Driving Academy Level 3 School 1:1 w/ Ed Morris @ Hethel
New to piston power, my track toys have Rotaries
Julian73 is offline   Reply With Quote
Old 08-17-2013, 01:56 PM   #97 (permalink)
Myx
Registered User
 
Myx's Avatar
 
Join Date: May 2010
Location: USA - Delaware
Posts: 19
Thanks for the quick responses. No concerned with the price, just fit! I can't complain on price because there no headers on the RAV4 market. Heck, there isn't even a market to speak of. I'll check with Toyo parts.

I wish there was a local (Within 100 miles) Evora with the header installed for comparison. And yes, I'm dead serious.
__________________
Kevin
2010 Toyota RAV4 Sprt
AKA Lotus Evora SUV
13.717@99.57mph
http://img32.imageshack.us/img32/659...av4v6times.jpg
Myx is offline   Reply With Quote
Old 08-17-2013, 04:42 PM   #98 (permalink)
Registered User
 
Join Date: Jun 2010
Posts: 24
Hey Myx,

I just sent you a PM.


Sent from AutoGuide.com Free App
Beophile is offline   Reply With Quote
Old 10-19-2013, 08:39 PM   #99 (permalink)
Myx
Registered User
 
Myx's Avatar
 
Join Date: May 2010
Location: USA - Delaware
Posts: 19
Quote:
Originally Posted by Beophile View Post
Hey Myx,

I just sent you a PM.


Sent from AutoGuide.com Free App
Months later, I just saw it. Thanks! I responded...
__________________
Kevin
2010 Toyota RAV4 Sprt
AKA Lotus Evora SUV
13.717@99.57mph
http://img32.imageshack.us/img32/659...av4v6times.jpg
Myx is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  LotusTalk - The Lotus Cars Community > Lotus Discussions > Lotus Evora



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 03:00 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.3.2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.