Official "Pure" 91 octane evo thread
387whp on 91 octane at about 23psi. The 426whp is on 100 octane at 26psi
stock engine with all the basic bolt ons. with hks 272 cams. Turbo setup is a fullrace t4 twin scroll manifold with a HTA gt3582r with 1.06ar t4 hotside.
car is daily driven and now has 115,000 miles with 70,000 miles on this current setup

stock engine with all the basic bolt ons. with hks 272 cams. Turbo setup is a fullrace t4 twin scroll manifold with a HTA gt3582r with 1.06ar t4 hotside.
car is daily driven and now has 115,000 miles with 70,000 miles on this current setup

Last edited by riceball777; Aug 8, 2012 at 04:27 AM.
Assuming other supporting mods are done (intake, boost control, LICP, ported ex mani / turbine / o2, downpipe, HF cat, tune), what's reasonable power one can push through the stock cat-back on California 91?
I've lived the loud exhaust life before, and just don't want to deal with the drone, etc again. I totally understand about backpressure and it's impacts on turbine energy, EGT's, detonation threashold, timing, BSFC, blah blah. I'm just not seeing in the threads how much of a limiter the tailpipe is vs. DP and Cat.
Thanks!
I've lived the loud exhaust life before, and just don't want to deal with the drone, etc again. I totally understand about backpressure and it's impacts on turbine energy, EGT's, detonation threashold, timing, BSFC, blah blah. I'm just not seeing in the threads how much of a limiter the tailpipe is vs. DP and Cat.
Thanks!
Assuming other supporting mods are done (intake, boost control, LICP, ported ex mani / turbine / o2, downpipe, HF cat, tune), what's reasonable power one can push through the stock cat-back on California 91?
I've lived the loud exhaust life before, and just don't want to deal with the drone, etc again. I totally understand about backpressure and it's impacts on turbine energy, EGT's, detonation threashold, timing, BSFC, blah blah. I'm just not seeing in the threads how much of a limiter the tailpipe is vs. DP and Cat.
Thanks!
I've lived the loud exhaust life before, and just don't want to deal with the drone, etc again. I totally understand about backpressure and it's impacts on turbine energy, EGT's, detonation threashold, timing, BSFC, blah blah. I'm just not seeing in the threads how much of a limiter the tailpipe is vs. DP and Cat.
Thanks!
sorry not offending but 20 psi pte6262 and 580whp,that's pretty high number,i don't see it happening anywhere usually around 450 or high 400's,what dyno is it ?
KSA Gas quality is pretty good i guess .
.. As what I said I will build new thread for my dyno very soon . The car didn't finsh yet . Yes I will post the vid because I just have a vid of the run . The Nemesis will hit the dyno soon and I hope I can get 600whp+ on 24psi on 91oct .
402hp/409tq on cali 91 oct
injen intake and full intercooler piping buddy club cams intake 272, exhaust 280 fic 1000cc injectors walbro 255 megan 02 housing megan downpipe w/ qtp exhaust cutout 1st gen. FP green Blitz Dual SBC Spec R Dual SBC Spec-R Twin Solenoid 3" intercooler
My car info and graphs
https://www.evolutionm.net/forums/ev...een-91oct.html
injen intake and full intercooler piping buddy club cams intake 272, exhaust 280 fic 1000cc injectors walbro 255 megan 02 housing megan downpipe w/ qtp exhaust cutout 1st gen. FP green Blitz Dual SBC Spec R Dual SBC Spec-R Twin Solenoid 3" intercooler
My car info and graphs
This car is from california and not sure what gas station he uses, but i imagine they mix with ethanol over there. this car made good power for its mods and fuel.
mods:
injen intake and full intercooler piping
buddy club cams intake 272, exhaust 280
fic 1000cc injectors
walbro 255
megan 02 housing
megan downpipe w/ qtp exhaust cutout
1st gen. FP green
Blitz Dual SBC Spec R Dual SBC Spec-R Twin Solenoid
3" intercooler... brand unknown
pretty sure we are not doing e85 yet on this car because i advised him its safer on a 3 port so i can really control the boost/ power curve. he didnt know enough about his Blitz unit, so i was scared to continue it for e85.
so here are the 91 results and ill update it with the e85 once we get them.
Looks like the cutout is doing alot of work here.

mods:
injen intake and full intercooler piping
buddy club cams intake 272, exhaust 280
fic 1000cc injectors
walbro 255
megan 02 housing
megan downpipe w/ qtp exhaust cutout
1st gen. FP green
Blitz Dual SBC Spec R Dual SBC Spec-R Twin Solenoid
3" intercooler... brand unknown
pretty sure we are not doing e85 yet on this car because i advised him its safer on a 3 port so i can really control the boost/ power curve. he didnt know enough about his Blitz unit, so i was scared to continue it for e85.
so here are the 91 results and ill update it with the e85 once we get them.
Looks like the cutout is doing alot of work here.

Last edited by golgo13; Nov 27, 2012 at 05:10 PM.



your shorter signature made me think it's 6262,can you share a graph along with rpm for the 20 psi without meth ? take care man driving it.