Forcedfed Dyno Plot - Page 2 - LotusTalk

BrettP · 01-21-2005, 10:10 PM

Quote:

Originally posted by aletes
What ECU or fuel managment computer did you use for this dyno run?

The car is running a Unichip computer.

BrettP · 01-21-2005, 10:37 PM

Quote:

Originally posted by MikeP
Forcedfed,

I can only imagine how much this will transform and improve the car. If it proves reliable in the next several months, I'm buying.

Thanks Mike. We will be monitoring the car for the next several weeks, testing it at the track and drag strip and doing real world driving on the car. I do not expect any long term issues, but that is the reason for all of our testing. To ensure you guys get a well sorted product that Lotus themselves could have sold you as an option through the dealership. Just make sure that if you are thinking of getting our turbo kit that you tick the optional oil cooler package at the dealer. I will have the weight of the kit for you guys on Monday at the latest. I think you will be shocked at how little weight we have added to the car. We will have a dry cell battery option that saves 10 pounds by itself and will make our kit almost a wash as far as additional weight goes!

shay2nak · 01-21-2005, 11:15 PM

what's up with the big dips at the cam transition point?

With 93 octane the stock motor makes 10 more HP?

Prolene · 01-21-2005, 11:22 PM

Quote:

Originally posted by shay2nak
... With 93 octane the stock motor makes 10 more HP?

That's with a 93 octane ecu map, not just the higher octane alone.

shay2nak · 01-21-2005, 11:35 PM

Quote:

Originally posted by Prolene
That's with a 93 octane ecu map, not just the higher octane alone.

Oh good, where can I buy 93 octane in California?

NMRJock · 01-21-2005, 11:38 PM

Quote:

Originally posted by Prolene
That's with a 93 octane ecu map, not just the higher octane alone.

Sign me up for that chip.

Randy Chase · 01-21-2005, 11:39 PM

Quote:

Originally posted by darkSol

Randy, why no HTML?

Oops, fixed.

Prolene · 01-21-2005, 11:45 PM

Quote:

Originally posted by shay2nak
Oh good, where can I buy 93 octane in California?

I guess one would have to settle for 'only' 241 hp in CA on pump gas, or mix 100 octane available in various locations with the 91 to be able to use the more aggressive map.

evomind · 01-21-2005, 11:51 PM

im interested to know more abt the unichip computer....i assume its a standalone?? hows the cold start up?? hows driveability? i dont doubt u can make some serious power with forced induction, ive done it to a few of my own cars, but sometimes depending on the setup u lose some driveability....how is the car for just cruising down the street at a steady 4k rpms?

shay2nak · 01-21-2005, 11:58 PM

Oh, the 10 hp increase on 93 octane is for the turbo motor ONLY? I was talking about the stock motor, no turbo.

MikeAR303 · 01-22-2005, 12:55 AM

Quote:

Originally posted by Forcedfed
Just make sure that if you are thinking of getting our turbo kit that you tick the optional oil cooler package at the dealer.

Oil cooler package? I haven't heard of it.

NMRJock · 01-22-2005, 01:07 AM

The oil coolers are stock on the federal Elise.

BrettP · 01-22-2005, 04:26 AM

Quote:

Originally posted by Prolene
I guess one would have to settle for 'only' 241 hp in CA on pump gas, or mix 100 octane available in various locations with the 91 to be able to use the more aggressive map.

That is correct. The Unichip is a piggyback computer, not a stand alone system.

BrettP · 01-22-2005, 05:50 AM

Quote:

Originally posted by LarryB
Brett- Have you had a chance to drive it much. How is the power delivery, as the boost kicks in?

Taking the car out today for my first drive. I will report back later!! I will try to get some video as well of the dyno and the exhaust sound.

Ruediger · 01-22-2005, 09:49 AM

>>> what's up with the big dips at the cam transition point?<<<

That diagram shown above by Forcedfed reminds me the other one somebody else showed for a boosted Celica.

So far I did not drive an Elise equipped with that Yamaha / Toyota engine but when I see the torque curves with or without forced induction I can imagine how it feels driving it in person.

Therefore changing the cam profiles and the computer mapping would be for me the top priority task. I do not understand why neither Toyota nor Lotus tried to solve that problem. The Yamaha engine is younger than Hondas K20A and a Civic R has approximately the same weight as a Celica.

Ruediger

sleepless · 01-22-2005, 10:44 AM

Seems like on a boosted motor you'd want to disable the cam profile change; that's what I've seen done on other boosted variable cam engines. That dip on the boosted dyno looks like it would be unpleasant...

Silver · 01-22-2005, 10:53 AM

Seems like on both posted graphs that in n/a form (Toyota and Lotus) that they have sorted out the cam transition.
Agree it seems a problem with boosted engines. Hope that Unichip thing can sort it out?

BrettP · 01-22-2005, 10:55 AM

We are still working on tuning the transition out of the crossover and we hope to make it a little smoother. We are also working on a new cam set up for the car and we will be eliminating the VVTI completely with those.

sleepless · 01-22-2005, 10:56 AM

Quote:

Originally posted by Forcedfed
We are also working on a new cam set up for the car and we will be eliminating the VVTI completely with those.

BrettP · 01-22-2005, 11:02 AM

I will try to get some driving video up later today guys!

01-21-2005, 11:15 PM	#23 (permalink)
shay2nak I <3 chicken, I <3 liver Join Date: Dec 2003 Location: Land of da 1000 Oaks, CA Posts: 15,053	what's up with the big dips at the cam transition point? With 93 octane the stock motor makes 10 more HP? __________________ save ~10 lbs gain 1 hp EQ: Y=(190X) / (1984-X) where Y is (HP) and X is (lbs) '07 EXIGE S * MY CAR ** VIDEOS! '08 ACURA TSX 6-speed http://www.makeNYNYagain.com

01-21-2005, 11:51 PM	#29 (permalink)
evomind J. Caesar Join Date: Aug 2004 Location: chicagoland Posts: 5,406	im interested to know more abt the unichip computer....i assume its a standalone?? hows the cold start up?? hows driveability? i dont doubt u can make some serious power with forced induction, ive done it to a few of my own cars, but sometimes depending on the setup u lose some driveability....how is the car for just cruising down the street at a steady 4k rpms? __________________ Vati. C6 ZO6. THE OBITS, YO! KEEP CRYIN! WHAA! REDNECK = PERSON WHO LIVES IN A DUMP BUT DRIVES AN ELISE! I never played by the rules, and I never really cared My nasty reputation takes me everywhere It is admitted by all that he was much addicted to women, as well as very expensive in his intrigues with them, and that he debauched many ladies of the highest quality; among whom were Posthumia, the wife of Servius Sulpicius; and Lollia, the wife of Aulus Gabinius.

01-21-2005, 11:58 PM	#30 (permalink)
shay2nak I <3 chicken, I <3 liver Join Date: Dec 2003 Location: Land of da 1000 Oaks, CA Posts: 15,053	Oh, the 10 hp increase on 93 octane is for the turbo motor ONLY? I was talking about the stock motor, no turbo. __________________ save ~10 lbs gain 1 hp EQ: Y=(190X) / (1984-X) where Y is (HP) and X is (lbs) '07 EXIGE S * MY CAR ** VIDEOS! '08 ACURA TSX 6-speed http://www.makeNYNYagain.com

01-22-2005, 01:07 AM	#32 (permalink)
NMRJock A smile a mile. Join Date: Oct 2003 Location: Grand Rapids, MI Posts: 3,567	The oil coolers are stock on the federal Elise. __________________ Paul Parkanzky Magnetic Blue with Biscuit Touring, LSS, Starshield

01-22-2005, 10:44 AM	#36 (permalink)
sleepless Elise Fanatic Join Date: Dec 2004 Location: Seattle Posts: 2,224	Seems like on a boosted motor you'd want to disable the cam profile change; that's what I've seen done on other boosted variable cam engines. That dip on the boosted dyno looks like it would be unpleasant... __________________ Pete 05 Lotus Elise \| 06 Porsche Boxster S \| 97 Porsche Turbo

01-22-2005, 09:49 AM	#35 (permalink)
Ruediger Registered User Join Date: Mar 2004 Posts: 321	>>> what's up with the big dips at the cam transition point?<<< That diagram shown above by Forcedfed reminds me the other one somebody else showed for a boosted Celica. So far I did not drive an Elise equipped with that Yamaha / Toyota engine but when I see the torque curves with or without forced induction I can imagine how it feels driving it in person. Therefore changing the cam profiles and the computer mapping would be for me the top priority task. I do not understand why neither Toyota nor Lotus tried to solve that problem. The Yamaha engine is younger than Hondas K20A and a Civic R has approximately the same weight as a Celica. Ruediger

01-22-2005, 10:53 AM	#37 (permalink)
Silver Registered User Join Date: Jan 2005 Posts: 1	Seems like on both posted graphs that in n/a form (Toyota and Lotus) that they have sorted out the cam transition. Agree it seems a problem with boosted engines. Hope that Unichip thing can sort it out?

01-22-2005, 10:55 AM	#38 (permalink)
BrettP Registered User Join Date: Sep 2004 Posts: 688	We are still working on tuning the transition out of the crossover and we hope to make it a little smoother. We are also working on a new cam set up for the car and we will be eliminating the VVTI completely with those.

01-22-2005, 11:02 AM	#40 (permalink)
BrettP Registered User Join Date: Sep 2004 Posts: 688	I will try to get some driving video up later today guys!

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