08-10 SS Turbocharged General Discussion Discuss the 2008 - 2009 Chevy Cobalt SS Turbocharged. On sale since the second quarter of 2008.

Dynojet time!!!!

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Old Apr 7, 2010 | 09:11 PM
  #51  
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man for all the money spent on this car, weeks it was at vendors shops, and all the different tuners its seen, and those are the numbers and thats the powerband. I gotta say its nice, but im not all that impressed. With a turbo swap and all of the best bolt on's money can buy id like to see at least a 400whp car. Am I the only one?
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Old Apr 7, 2010 | 09:12 PM
  #52  
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Super20G is just old. It's no as efficient for it's size. Hahn needs to move on to something new.
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Old Apr 7, 2010 | 09:14 PM
  #53  
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Originally Posted by Gestapo007
man for all the money spent on this car, weeks it was at vendors shops, and all the different tuners its seen, and those are the numbers and thats the powerband. I gotta say its nice, but im not all that impressed. With a turbo swap and all of the best bolt on's money can buy id like to see at least a 400whp car. End of story.
Its an S20G, end of story. That turbo is old, and decrepit. This doesn't surprise me at all, tbh. It would push about 400hp at like 30 psi, which is just barely better than the K04 could do. It does it a bit more efficiently though, yes. I would compare the S20G to the K04+, in all honesty.

Originally Posted by slowswap
Super20G is just old. It's no as efficient for it's size. Hahn needs to move on to something new.
But DSM turbos are all they are familiar with. God forbid they try a PTE.

Last edited by mkriebs; Apr 7, 2010 at 09:14 PM. Reason: Automerged Doublepost
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Old Apr 7, 2010 | 09:17 PM
  #54  
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Originally Posted by mkriebs
Its an S20G, end of story. That turbo is old, and decrepit. This doesn't surprise me at all, tbh. It would push about 400hp at like 30 psi, which is just barely better than the K04 could do. It does it a bit more efficiently though, yes. I would compare the S20G to the K04+, in all honesty.



But DSM turbos are all they are familiar with. God forbid they try a PTE.
Ball bearings with HTA compressor wheels! Or VNT/VGT turbos!
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Old Apr 7, 2010 | 09:20 PM
  #55  
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Its also through the stock exhaust manifold with this adapter piece mating the turbo to the manifold. Def causing some weirdness at certain times.

What kind of fan setup were they running during your pulls John and did you log the car?? Curious if it wasn't getting enough airflow and causing high IAT's

Last edited by BYT*SS*TURBO; Apr 7, 2010 at 09:20 PM. Reason: Automerged Doublepost
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Old Apr 7, 2010 | 09:21 PM
  #56  
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Originally Posted by BYT*SS*TURBO
Its also through the stock exhaust manifold with this adapter piece mating the turbo to the manifold. Def causing some weirdness at certain times.
o.O.
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Old Apr 7, 2010 | 09:26 PM
  #57  
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he didnt get a turbo manifold?
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Old Apr 7, 2010 | 09:27 PM
  #58  
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But, Dejon and Hahn claim the stock exthaust manifold flows "JUST FINE" (in dejon's words), and that we cannot prove that the stock mani flows poorly. Lol. Like a good look, and a fine bit of common sense would not be enough proof.

Originally Posted by Gestapo007
he didnt get a turbo manifold?
No, the Hahn kit does not include one, and I do not believe that one is/was offered from Hahn.

Last edited by mkriebs; Apr 7, 2010 at 09:27 PM. Reason: Automerged Doublepost
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Old Apr 7, 2010 | 09:30 PM
  #59  
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I know for sure John's car is on the stock manifold.
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Old Apr 7, 2010 | 09:38 PM
  #60  
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Originally Posted by BYT*SS*TURBO
I know for sure John's car is on the stock manifold.
Ditto that! Hahn has never, and likely will never offer an exhaust manifold, unless its a one off.
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Old Apr 7, 2010 | 09:46 PM
  #61  
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I believe it had the stock O2 housing mated to it as well but I could be wrong on that part.
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Old Apr 7, 2010 | 09:49 PM
  #62  
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Originally Posted by BYT*SS*TURBO
I believe it had the stock O2 housing mated to it as well but I could be wrong on that part.
I am fairly certain it does... but I have never seen it in real life. Dejon's is the same way too.

One thing I just thought of... if our stock mani flows so well (as Hahn and Dejon seem to think), why is everyone running their kit having issues breaking 400whp?

Food for thought.
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Old Apr 7, 2010 | 09:54 PM
  #63  
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I'd like to see someone try the RD Fabs manifold on an LNF.




OTTP is selling them now...
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Old Apr 7, 2010 | 09:58 PM
  #64  
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Thats nice, looks alot like the Werks manifold that was on my car with the 5557:

Large pic is large LINK.

Ours is a bit different though, since the 5557 is too big to fit very high up in the engine compartment, we needed to build the manifold so it dropped the turbo some.
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Old Apr 7, 2010 | 10:00 PM
  #65  
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you answered your own question. you are venting after the maf. THIS IS THE ******* PROBLEM.
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Old Apr 7, 2010 | 10:00 PM
  #66  
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The RD one was designed around a T3/T4 .60 trim hybrid very comparable to a GT35, but I'm running a 3071 on mine...

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Old Apr 7, 2010 | 10:05 PM
  #67  
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Originally Posted by badbaltguy
Lol well jus 10 minutes away from my house there is a place, but I would imagine the nicest thing u could say to the girls in there is "nice toof" lol..

My question still hasn't been answered, if it were leaned out, what would the outcome be on the dyno
wow, that bad huh? i have a place from me (about 15 mins. away) that is very similar.
LOL. there is a very nice place about 50 min. away from me.
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Old Apr 7, 2010 | 10:21 PM
  #68  
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The power curve looks good, but the gains don't really seem worth the hassle and cost of a turbo swap. Our 252 is putting down 60 more ft lbs and 90 more whp at the same boost levels.
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Old Apr 7, 2010 | 10:24 PM
  #69  
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Originally Posted by Matt M
The power curve looks good, but the gains don't really seem worth the hassle and cost of a turbo swap. Our 252 is putting down 60 more ft lbs and 90 more whp at the same boost levels.
Isn't the 252 a larger turbo though? And a hell of a lot more efficient.
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Old Apr 7, 2010 | 10:29 PM
  #70  
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Originally Posted by Area47
you answered your own question. you are venting after the maf. THIS IS THE ******* PROBLEM.
How is this causing a rich condition while he's at WOT?

Originally Posted by slowswap
Isn't the 252 a larger turbo though? And a hell of a lot more efficient.
Yeah, it's larger, but we're not talking about 10 or 15 hp here. And he said he can't floor it below 4000rpm, so why run the small turbo?

Last edited by Matt M; Apr 7, 2010 at 10:29 PM. Reason: Automerged Doublepost
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Old Apr 7, 2010 | 10:29 PM
  #71  
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only a leak in the BOV or piping would cause a rich condition in this case that i know of, but where it blows off after a run shouldnt be the issue that were looking at
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Old Apr 7, 2010 | 10:40 PM
  #72  
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FWIW, I'm not hatin on BBG or his car. My comments are more directed at Hahn and their unimpressive hp/dollar builds.
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Old Apr 8, 2010 | 12:09 AM
  #73  
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Originally Posted by Matt M
How is this causing a rich condition while he's at WOT?

moving the maf to after the valve would cure this issue. der, i know. it seems the recovery time from the lost air that has already been counted is kinda pokey. to me, something seems funky with the tune. dunno.

off topic matt. the pillar pod you guys have now. looks good.
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Old Apr 8, 2010 | 12:55 AM
  #74  
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Originally Posted by Billy Baldone
So I have to be the one to ask,You spent how much, for less than what Terminator is making on a stock turbo?I get that there is more potential there,but it sure doesn't make a whole lot of sense to spend all that money and get 356/363.I really would like to see your 1/4 mile times though.I guess what I want is you to sell it to me,tell me why it's worth it.
I like how an accurate dyno number from a dynojet SAE with a smoothness of 5 is compared to an inflated dynocom number.

I'd put money on it that this car is one of the fastest LNF cars on the site besides ZZP.
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Old Apr 8, 2010 | 02:14 AM
  #75  
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Bov was tightened all the way, no fan in front of the car, gearing up to 3rd I made sure that I didn't "vent" any air from the bov.. That's not the issue. If need be, I will run a log of doing 200 3rd gear pulls back to back to prove that it's not the problem. On the other hand gentlemen, I'm not worried about it anymore, performance autowerks is gonna transform my car into a ******* monster, so take these numbers and double them if ya want cuz that's what my next goal is. Build. big, *******, build. Daily driven? **** yes. Am I stupid for wantin to daily drive it after the build? **** yes. Do I care? **** no.
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