Has anyone put on a ported stock header? - LotusTalk

rstutts · 08-04-2009, 05:16 AM

If so, did you notice any increase in power? You didn't happen to do a before and after dyno? Just curious, as I read a thread saying you would gain 5 - 10 hp and not have to have it tuned.

Dave · 08-04-2009, 05:31 AM

Lots of reading here: Ported stock header

I tested stock v ported v DC a while back...dyno/results are somewhere in that thread.

fpitas · 08-04-2009, 06:34 AM

Quote:

Originally Posted by rstutts

If so, did you notice any increase in power? You didn't happen to do a before and after dyno? Just curious, as I read a thread saying you would gain 5 - 10 hp and not have to have it tuned.

If you install it after your supercharged engine has been tuned, you might want to be careful. FI engines aren't as forgiving about AFR as NA engines, especially when you get to the kind of power the VF2 has.

rstutts · 08-04-2009, 08:47 AM

Code:

If you install it after your supercharged engine has been tuned, you 
might want to be careful. FI engines aren't as forgiving about AFR as NA
 engines, especially when you get to the kind of power the VF2 has.

I read in that Ported Header post that a tune was not needed on it. But since my car will have a VF stage II, I was not sure if it would increase my hp or harm my engine (or possibly both).

fpitas · 08-04-2009, 09:19 AM

Quote:

Originally Posted by rstutts

Code:

If you install it after your supercharged engine has been tuned, you 
might want to be careful. FI engines aren't as forgiving about AFR as NA
 engines, especially when you get to the kind of power the VF2 has.

I read in that Ported Header post that a tune was not needed on it. But since my car will have a VF stage II, I was not sure if it would increase my hp or harm my engine (or possibly both).

Better ask Jermaine or Charlie. I'm pretty sure you'll get more hp, but the AFR might also lean out. They could certainly retune to account for that.

08-04-2009, 05:16 AM	#1 (permalink)
rstutts Registered User Join Date: Aug 2008 Location: Martin, TN Posts: 244	Has anyone put on a ported stock header? If so, did you notice any increase in power? You didn't happen to do a before and after dyno? Just curious, as I read a thread saying you would gain 5 - 10 hp and not have to have it tuned. __________________ 2005 Solar Yellow Elise touring package, star shield, hard top, soft top, ACT HDSS clutch, Saikou Michi catch cans, LED tail lights and VF II, 288 whp () 2001 Green Toyota Tacoma, 4 x 4 2008 Red 5455 Massey Ferguson, 6 x 6, cab, ipod, GPS navigation, regular beer holder 2001 Yellow Cat D3G-LGP, custom made beer holder

08-04-2009, 05:31 AM	#2 (permalink)
Dave Mods are good for you Join Date: Apr 2005 Location: Ohio Posts: 2,961	Lots of reading here: Ported stock header I tested stock v ported v DC a while back...dyno/results are somewhere in that thread. __________________ 2008 Solar S240 Exige 2005 Saffron Elise - BOE TVS Supercharger 291WHP w/ EFI Engine Mgmt

08-04-2009, 08:47 AM	#4 (permalink)
rstutts Registered User Join Date: Aug 2008 Location: Martin, TN Posts: 244	Code: If you install it after your supercharged engine has been tuned, you might want to be careful. FI engines aren't as forgiving about AFR as NA engines, especially when you get to the kind of power the VF2 has. I read in that Ported Header post that a tune was not needed on it. But since my car will have a VF stage II, I was not sure if it would increase my hp or harm my engine (or possibly both). __________________ 2005 Solar Yellow Elise touring package, star shield, hard top, soft top, ACT HDSS clutch, Saikou Michi catch cans, LED tail lights and VF II, 288 whp () 2001 Green Toyota Tacoma, 4 x 4 2008 Red 5455 Massey Ferguson, 6 x 6, cab, ipod, GPS navigation, regular beer holder 2001 Yellow Cat D3G-LGP, custom made beer holder

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