new guy with questions???

**nimblett** · 10-27-2009

hi guys im new to this so work with me.. i hav e an 04 comp g with like 130k on the clock. 3 months ago i baught a slp cat back 180 thermostat wizair box from zzp,ngk plugs, msd coils, and zzp peformance wires. 3 days ago i instaled a 3.4 pully from intense racing. on the first drive the car took off fine but as it got hot i only could take the rpms up to 3500 to 4000 any higher and it starts to miss fire. it only does it on a hot motor when the motor is cold i could take it up to 5500 with no prob but if i was to drive hard the tem climes and it happnes again. it never acted like this untill i instaled the 3.4 pulley . is it because of the stock pcm?

**a98gtp4u** · 10-27-2009

put the stock pulley back on, its gonna blow up. that pulley is 2 small 4 that setup on a series 3 motor. ive read and the smallest u should go is a 3.6 pulley or somethin. maybe im wrong. i dont have 2 much knowledge on what mods 2 do on a series 3. hopefully some1 will correct me if im wrong.

**Pittman06** · 10-27-2009

no clue on the S3 but i agree, pull that damn thing off before you grenade that thing! may need more upgrades including valvetrain and more cooling obviously before you can run a pulley, and i would def say it would need tuned for it no matter what.

**Bio248** · 10-27-2009

pulley too small. no supporting mods. youre going to blow your motor up and i will laugh.

**a98gtp4u** · 10-27-2009

basicly wats goin on is like wat happens 2 a turbo car when it boosts over what the turbo can hold,wastegate wont open and all of a sudden u cant go nowhere. well 2 small of a pulley, specially on a gen 5 s/c will cause nothin but problems without supportng mods and a good tune.

**nimblett** · 10-28-2009

i have everything that i think would support the pulley. hogan down pipe with cat( supposed to be here on fri), slp cat back and cold air intake.. the reprogramed pcm ( already baught,waitin for it to get instock to ship) thats my supporting mods.. or what i was told i needed to run a 3.4.... or do i need more mods for the pulley?

**carl06GT** · 10-28-2009

you need a front PLOG or if you own a dremel you need to hog the the stock one out for free. and a 3.6 on 04+ cars is equivilant to a 3.4 on the 97-03

**ZR1Vette09** · 10-28-2009

Originally Posted by carl06GT

you need a front PLOG or if you own a dremel you need to hog the the stock one out for free. and a 3.6 on 04+ cars is equivilant to a 3.4 on the 97-03

+1 after reading the safely modding your 3800 thread it would seem that you are about ready for a 3.4 buuuuuuut with the newer superchargers all the knowledgeable guys will say we can only drop to a 3.6. Get that thing off there before you screw it up for good.

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