Haven07

There are more issues with aftermarket intakes besides "looks." I bought and ran zzp's CAI for for at least a year until I read this article:
https://www.cobaltss.net/forums/tech...esting-307391/

After that I thought about it and did an airbox mod on my car, my blower was just as loud as when I had my zzp intake on. No real gains were felt/lost.

Lots of good info in that article and thread I'd take a look at it, as well as some of the other articles in that forum section to get some good info.

But it's your car/money do what you please with it, enjoy the placebo effect

Staged07SS

iTrader: (25)

mrbelvedere

iTrader: (3)

and who is that

mrbelvedere

iTrader: (3)

one thing you all are forgetting is the stock stuff can and will become a restriction pretty quick we have a long way to pull air into the engine so once past a certain point you will need a bigger air intake and then a bigger throttle plate

Staged07SS

iTrader: (25)

The stock intake with lower can removed & K&N filter supported 400hp on the Time Attack car.

Above that, will it become a restriction? Maybe so....

I've had many discussions with Bill Duncan on the topic.

mrbelvedere

iTrader: (3)

the time attack never saw 400hp

Staged07SS

iTrader: (25)

On spray it sure did....

Ask Powell if u don't believe me.

mrbelvedere

iTrader: (3)

no stock intake either


https://www.cobaltss.net/forums/gene...-attack-12876/

mrbelvedere

iTrader: (3)

it never saw 400hp even on spray mid to high 300's

Staged07SS

iTrader: (25)

Thats the stock intake John. It's wrapped in heat reflective film.

They dumbed down the horsepower ratings for magazines. PM Powell for the official hp ratings.

The car made 400 on spray and 320 off. Bill Duncan and Powell comfirmed.

Staged07SS

iTrader: (25)

An e-mail from Powell about the TA intake....

Re: Time Attack Air Intake Question

--------------------------------------------------------------------------------

Quote:
Originally Posted by Staged07SS
Hey John,

I have a question for you.... I'm working on building my engine up to the Time Attack SS/SC's specs, internals, valve springs, nb shafts, etc. (already have the blower), and was wondering about the air intake.

I have lots of photos of the Time Attack car, and noticed it runs the production Donaldson air intake tubing. Did you guys also use the stock airbox & air filter? The reason I ask is, I'm starting to learn what a waste of money the Injen cold air intake or any cold air intake is for this car. I have tested a few different intakes on my car over the past 4 years, and noticed no further gains over the stock intake piping and K&N drop in filter.

After work this afternoon I plan on reinstalling my stock intake piping, slightly modified airbox (not a hack job modified airbox), and k&n drop in filter. The inlet of the Injen intake is only 2.75" o.d. and I feel it is seriously screwing with some parameters. The stock air box inlet is 3", and it still baffles me that Injen made the inlet smaller than stock. Let me know your thoughts when you get a chance.

Thanks,
Jeff


stock air box, cut the can off the lower part wrapped all of it including the inlet runner in silver reflective heat wrap, K&N filter. is all.

injen sucks

Redline air box (ex trailblaxer 5 cylinder) is best but could not fit on cobalt for packaging rad tie bar is too close, but would be interesting to try cheers

Staged07SS

iTrader: (25)

Another e-mail about the TA car....

Re: Time Attack SS/SC question

--------------------------------------------------------------------------------

Quote:
Originally Posted by Staged07SS
Quote:
Originally Posted by qwikredline
Quote:
Originally Posted by Staged07SS
Hey John,

I have always been interested in the Time Attack SS/SC you built, and was wondering if you could provide me with some information on it.

-What kind of power did it make on & off nitrous?
-Did you use a modified GMS3 tune?
-What size pulley did you end up running?
-What injectors were you using?
-What kind of power increase did you notice over the M62 with the H62 hybrid high helix blower?

I'm currently running one of the few high helix blowers on my car with a GMS3 tune & 73mm pulley, and would love to have it run like the time attack car one day. Maybe not so much handle like the time attack car, but def perform like it power wise.

Thanks,
Jeff

400 on nitrous, about 80 less without. Tuning was done by Lotus on the spot so not any specific tune but it was off the GMR stage 3 pcm
76 mm

key was light the car was built by us to about 2000 lbs so with driver 2200 pretty darn awesome that lite...the nitrous was the most evident power boost, Heinricy drove right off the track under braking the first time he activated it down the straight way he was not prepared for the speed it delivered

email qwikredline@hotmail.com I am not on here much at all cheers

John,

What injectors were used on the Time Attack Cobalt? Did you end up using the GMPP 42 lb/hr injectors?
Thanks.

Jeff

42.

Staged07SS

iTrader: (25)

Im far from a Powell nut hugger, but I believe the guy since he was there and was part of the development.

There were many postings of different hp ratings of the TA car because it was used for the street tuners challenge on the speed channel before it ran in the actual TA.

Staged07SS

iTrader: (25)

You and I will never see a sheet.... the car was a unicorn, and sadly no longer exists.

mrbelvedere

iTrader: (3)

I know your not a nut hugger but still i take it with a grain of salt because no one has ever produced a sheet of it doing work on the rollers and im not busting your nuts either and i know the stock intake is a decent piece but it is a restriction after a point if it was not then people would not pick up power when they changed it out same with the throttle plate

mrbelvedere

iTrader: (3)

someone still has all that stuff

Staged07SS

iTrader: (25)

Bill Duncan. I've asked, but he will not release any of it.

ECaulk

iTrader: (6)

I'm going to guess he legally can't release any of it

mrbelvedere

iTrader: (3)

i would not say that more like they don't want to be caught doing something they weren't supposed to do

ECaulk

iTrader: (6)

Either way he's coving his ass

Staged07SS

iTrader: (25)

This.

I had to pull tooth and nail to get the GMR S3 torque specs outta him, and even then he couldnt give the exact numbers because they were never offically published.

z28addiction

... I didn't know I cared about some time attack car. Please take this crap elsewhere. Thx

mrbelvedere

iTrader: (3)

I will put it where I choose hows that

Staged07SS

iTrader: (25)

He can learn something from that car.

z28addiction

400 hp time attack car not interested. This is my summer DD. I'm not interested in spending tons of money to make a weak 400 hp. Good for that car but its unimpressive. If your not here to give me a hand on questions and just looking to be a tool who thinks there sweet bc they drive a cobalt just leave my thread please. I've been active on here for a few days and everyday it becomes more pathetic.