Had Magnaflow 3" exhaust and ZZP 3" DP installed yesterday..It sounds awesome.

The DP is a work of art..Its a shame its under the car lol

Updated HP tune and ZZ CAI coming up..stay tuned

 

Did you get cat downpipe?any extra hp on dyno butt?
Congrats wish I had a upgrade like that.

 

Thanks

I got the DP with the 200 cell cat, I haven't had it on the dyno yet but there was a definite difference from the first ride

Installing ZZP CAI this week and getting tuned updated

 

Dp don't throw any codes,I want to get cat down pipe but don't want to throw engine light and have emission issues?

 

Lowboy44 did you do the HPtune yourself or start with a file from someone? I am curious as I recently purchased VCM to tweak my other GM rides and will do the same for the HHR now.

 

No codes from the DP yet I also added the forge vented and getting a CEL..need to have my tune changed to vent to atmoshere

 

My buddy has a shop that does mostly Hondas but bought the HP set up to tune mine. I had another member send me a could tune,havent loaded it yet. The one thing that was different for my guy was he never tuned an auto and it seems a lot of changes are made to the tranny in the tune

I wanted to make these upgrades before changing tune..installing CAI this weekend then getting updated tune

 

Had updated tune loaded and not happy right now..car running like crap.. I guess this is what I get when I have a Honda guy tune my buggy lol

Need help..Who else is running HP?

 

few on here are, try 2005hhrauto, think that is his sig, think he is running HP suite
and robssturbo, he knows a good tuner
f4tal is another who just got tuned last month on HP

I have it but have yet to tune, waiting to gut my stock DP and motor mount
i also highly recommend checking out the cobalt sight, a lot of hp tuned guys on there that may be of help

try this link also
https://www.chevyhhr.net/forums/2-0l-performance-tech-46/hp-tuned-49801/

 

also, forgot!, another member here Jaxon contacted me with a tuner he knows that has done a lot of LNF motor tunes on HP
he might be able to offer some assistance