2008 hhr ss auto. Considering big turbo, intercooler, exhaust, and tune with hp goal of 400 - 425. Question is to do this to an engine with 60k, or spring for a new LDK to start with? Car is not a daily driver, 12k over 3 years to shows, test and tune nights to humiliate Mustang owners. Whats your thoughts, old or new?

 

let it ride, just be cautious with the tune

 

60k is nothing. Mod away.

 

Keep your existing engine and throw a proper sized turbo on there, S-256 would work.

 

Serious about zz performance lnf kit. s256. don't want the labor cost twice.

 

I have tuned a few. Gunney07 ran his at the track and it trapped 122-123 MPH on 93 octane and 28-29psi max boost. No dyno but based on his traps and the stock trans roughy 450 whp. Stock LNF motor, stock 5 speed manual. Your auto might be even quicker but you do have more weight and less aero vs a Balt.

 

**** I put a zfr on my 08 at 94k miles lol

 

Performance is similar but the ZFR loves to surge in the midrange I think most of the issue is the factory exhaust manifold though the kappa efr cars with new manifolds do not seem to have as big of an issue.

 

Yeah, it's annoying. I'll be at 15 psi light throttle and it will just blow off

 

pulled the trigger on zzp s256 turbo kit with intercooler and pipes along with 3" stainless exhaust. black friday sale $900 off total!

 

ups just delivered..........

 

Sweet now get it installed and tuned.

 

Guy with a rack in his backyard garage will do the install in about 2 weeks. Too old and too cold to lay on my back using jack stands

 

Install happens this weekend. Hoping it goes together easy

 

You self tuning it?

 

Starting with zzp Matt's tune to sort it out. Will probably use local shop for dyno tuning once the weather comes around. If that doesn't work out, i'll contact you. thanks

 

have term tune you lol best there is!

 

Zzp s256 kit installed. Runs with no codes. Needs a better tune than what the kit came with. zero driveability.

 

I have struggled with this setup since install. Big thanks to Mad Dr Phil for the info and to my brother for fixing the vacuum line routing. Back to tuning!!! (with Terminator2)