Running a couple of pulls today before my ottp header/downpipe install to get some before and after numbers! ill post info later

 

Finally! Lol. Now ZZP needs to do the same with their long tube. Are you stock exhaust at the moment?

 

Nice, I'm guessing its the long tube you have..

Awaiting numbers after the Headerinstall

 

interested.

 

Sub'd!

 

In for rezultz

 

mmmm...less back pressure...i wouldnt expect too many gains on this, but GL anyway..

 

so wtf. im thinking a tune might be the prob. But check the pic. OOTP stage 2 btw 60lb injectors, 2.8" pulley. This is before long tube install btw. Getting it installed tomorrow. What do you guys think?

 

yessir

 

Check your IC pump and plugs. Car is probably pulling timing.

 

looks like stickyish dyno conditions and ballbuster one on top of that lol the ott tune is pretty good out of the box

 

i had it custom tuned by josh so idk. i was thinking timing as well.

 

Heres two pulls.

YouTube - 2006 Cobalt SS Supercharged Dyno Run #2

YouTube - 2006 Cobalt SS Supercharged Dyno Run #3

 

Checked to make sure your ic pump is flowing?

 

Definatly in for results. I'm in the same boat as you. OTTP stage 2 with stock exhaust and i'm working on purchasing Frew's OTTP long tube right now. Just waiting on a shipping price. Do you have an interceptor gauge to see you're IAT2 temp?

 

that thing is loud as eff... then again the only M62 car i've heard is my friends with stock catback and a short/3" downpipe lol

 

no i dont :/ and i gotta wait until next week to get the results. sorry guys ill keep you updated

if you thought that was bad just wait till now. its disgusting.

 

also in to see the results.

 

Do you have an aftermarket heat exchanger ??

If not, your car is prob pulling timing (like others have said) due to your IAT2's.

Cooling mods are key. The more the better.

 

right it all comes with time (and money). but i will have results next week. but it does sound amazing. really clean sounding. im extremely happy with it. and would recommend it. im excited for results cant wait!

 

Not really. Few of us have proved that.

 

So you are saying if you ran a small pulley on the stock cooling system your car would be fine, and wouldnt pull timing? I find that very hard to believe.

I'm not trying to argue with you, but I would like to get some explanation on your logic as to why cooling mods arent what they are cracked up to be.

I could see if you had a full exhaust and ported head you would be ok, but most Cobalt owners do not have that.

I myself saw the best improvements once I installed my OTTP 4th gen heat exchanger. Hell, back when I was only straight GMS3 my car would pull timing up top at the end of 3rd due to my wonderfully high IAT2's. Once the heat exchanger was installed I saw a vast improvement. I will always be a believer in cooling mods, because, well, I have done plenty of tests overs the years with my car on what works and does not work.

 

Very true.

In for results.

 

Stock cooling system, stock exhaust (actually smaller since GMPP catback is 2.25"), stock head. Small pulley TVS. Running 27*+ of timing.

Low 12s trapping 115-117. Could of cracked off an 11 possibly if all tracks didn't close early.

Area47 also ran stock cooling system with a shitty pacesetter header.

Not sure how many times we need to tell people these so called "cooling mods" are mostly a waste. Especially these shitty aftermarket heat exchangers that everyone buys.

 

Area ran a cobra heat exchanger. So he was not exactly on the "stock" cooling system.

Not to mention Area ran E85 which has cooling benefits of its own. So yes someone like you or Area could get away with little to no cooling mods.