my tuner and i cant figure out whats wrong. my car with a cai and 3 inch pulley made 231whp at 6krpms making 12.5 pounds boost.

i got the zzp header downpipe put it on broke it in got 42#injectors and dynoed the car again and made 237 hp at 7krpm and 15 pounds boost. we tried everything known to man but can seem to find out where the power is? any ideas or any more info needed please ask and please help the car has a bottleneck somewhere and i dont know where. we played with the timing and saw no improvement. we messed with hptuners reflashing everything going back to stock updating it just wouldnt change the outcome.

my two suggestions were the cai was on the car when i got it and has a crush point. the crush point might not have limited the car with only 12 psi boost but now that its revving higher and needs more air it might be a slight prob. the other one is i drive the car pretty low in the rpm band and i could have bogged up the new cat. i just dont know and its driving me crazy. the car has a ton more power in it and it just doesnt seem to make it

 

those arent bad numbers on a 3.0 pulley

 

how could i only gain 7hp with 2 more pounds of boost and the zzpheader down pipe combo ive seen many people gain more with just the header downpipe think 231 was good for before but now id expect at least 245

 

all im seeing is u have a 3.0 pulley..u added a header and dp and 42lb injectors did i miss something? the high numbers u got before (since im guessing it was on stock injectors) was because u were running lean as hell and now ur suppling alot of fuel which is making u slugish...tell ur tuner to lean u up and i recommend u get a wideband

 

beat me to it raven, he must have been really lean before, lean out, add some timing, and giver ****

 

it did lean out a bit before but thats why we left the rev limiter at 6k now with more fuel it runs right so we raised it to 7k... still within reason. so why didnt i gain any power from the header downpipe?

 

more boost does not always = more power

you should loose boost when you runa different header and dp to

 

what he said...and u may have got alot of power from the header and dp but since u richened it up it took away some of the power u had before..so u subtracted some by adding the injectors than added some with header/dp

 

so the header downpipe did nothing cause i richened up the af... so i also have a meth kit on there and that only gained me 10hp or so. so why isnt that getting me more hp

 

your tuner is not good

 

rich = no bueno man...meth isnt a huge power adder...its more for cooling purposes but u can use it as a octane booster also which will allow u to run leaner and add more timing without knock...whos ur tuner? u need to punch him in the ******* nutts

 

you have meth. full exhaust and only put down 237?

wek sos


you should LOSE boost, not gain. something isn't happy in the exhaust.

 

yea i was thinking clogged cat but being so new i dunno

 

you guys have any suggestions to try diff things to make power

 

lean out your afr, run more timing. Nothing is wrong with the car 15psi is quite normal for a 3.0 pulley

 

what he said..but what i was saying lsj was he shouldnt have jumped 3 psi from adding a header and downpipe..

 

i run 15 psi on a 3.06 pulley right now.

i know how to make power in your car. like 260+ fwhp kinda power, but you're no where near me. so im of no use

 

yeah i know something was not right in the first place

 

i jumped 3psi from running the engine higher in revs from 6-7k. my tuner is good but the car is being crazy. we were trying everything to figure out whats wrong and nothing changed with the way the car ran.

 

its supercharged not a turbo...boost is instantanitly(sp)

 

you don't gain that much more boost from 6k to 7k. what kind of dyno is this on? numbers are not everything man if the car feels good who cares.

 

probably because your running a stock catback?

thats not possible, a 3" should run in the 14psi range give or take elevation.

running to 7 k wont make it boost more, it will just hold that boost longer.

 

stock catbacks not that bad i trap 108 on my stock catback car

 

im not saying its bad, im saying that it would lessen the amount a new downpipe could offer in terms of power over a full 2.5 or 3"

 

i know what your saying man just giving you **** lol