I have contacted Treadstone Performance about their new kits for the Cobalts and have decided to test one out on an HHR. I have opted to go with a garrett gtx series kit instead of their precision turbo kits. the gtx has amazing spool up and flows better than the gt series turbo line. They have designed a stainless cast tubular manifold that is just complete sex. it also comes with a turbosmart wastegate, downpipe with recirculated wastegate dump, all lines and gaskets, and downpipe wrap. all in all its a great kit and not a single person has tried the garret line of turbos on this kit yet, all have done the pte's. I will likely be running my dejon upper pipe with zzp bov and zzp lower pipe but i may switch those to treadstone as well....we'll see. the rest of my mods are in my sig. I will be adding a devils own meth kit with 5 gallon tank and braided lines, spraying a hefty shot of meth....at least a 7gph nozzle....as well. i may pick up the zzp cams with fuel lobe or the 5th injector kit if we run into fueling issues, but otherwise i will be running the stock internals for now since my engine only has about 15k on it.

Kit can be found here:

http://www.treadstoneperformance.com...ge+4+Turbo+Kit

here is a compressor map:



.......that compresor map simply amazes me


I will do a detailed write up for the installation with pictures and provide a dyno sheet when the tune is complete

it is going to be a great summer

 

Holy crap on comp map!

FYI I tried treadstone upper and lower and they didnt even come close fitting....I offered cut them up and mock fit ment etc. but treadstone didn't like idea lol

 

yeah i know that compressor map just blows my mind every time i see it lol.

i wonder what it is about them that doen't fit correctly?? oh well guess guess i will use what i got then

 

Did I already see this? Hahaha

 

Awesome keep us updated.

 

The upper pipe is shorter comes over engine more than factory unit
Lower pipe was so far off I'd had cut and rotate at least 3x to even get idea if fit( mine is auto so is even worse than a manuall HHR to cobalt comparison)
Jeremy at treadstone who I dealt with through cobaltss.net

 

Great choice sir!

 

bout damn time you got an account here

 

We built a car at my shop using the gtx3071 it's plan sick 500 whp on gas easy

 

holy hows it been? lol....that's awesome! an lnf? saab or cobalt? on 93? stock internals? what are you guys doing to get the trannies to hold?



sorry for all the questions lol