Built VW Mk7 GTI, DBV2 Hybrid Turbo - Heartbreaker Dyno

'15 GTI FBO, DBV2 V2 TBB hybrid turbo, Precision Raceworks ported/polished head, MPI kit and Stage 4 LPFP kit (dual Walbro 450s). E79.

My turbo issues are finally behind me! At only 32psi we managed to get 524whp/440wtq (corrected) on a Mustang dyno, which is said to read 10-12% lower than a Dynojet. That puts this at ~580whp for those that care.

I know a dyno is just a dyno, and I'm not chasing an HP number, but I am really impressed with this DBV2 V2 TBB hybrid turbo. It has a crazy amount of low-end response which makes it ideal for slow corners at the track and just driving around town, while flowing plenty up top. It's actually more responsive than my twinscroll EFR7163 was.

I'm also impressed with the Precision Raceworks ported/polished head. Thanks to it, we're able to make this power at several less PSI (32) than expected, meaning the turbo isn't having to work so hard. Power seems to be holding better up top compared to other dynos of this turbo that I've seen as well.

We had to cut the dyno tuning session a bit short, but tuner thinks we still had 10-15 or so HP left in it, FWIW. Going to tweak a few more things and do it again in a couple of months before the good weather comes back, and hope to make a full track season next year.

[paulwiest]

This car looks just like mine! Clubsport bumper and all. How come you went from the Boss 600 to dbv2?

[pedrohernandez]

How’s the car running? Dying to see more!!

[MeltingRubberZ]

How's the car doing? Seems like people start to have reliability issues once you go past IS38 (I'm talking years of use, ~50k+ miles). Saw your one comment said PCV issues?

[coldfire]

I’m getting my motor built as well! Did you do valves and valve springs?

[TENNESSEETRACKHAWK]

Ummmm no its a Heartbreaker CAR not dyno. My car makes plenty of power on a Mustang dyno cause my car actually makes a lot of power. Really tired of hearing the lame excuse of "Heartbreaker dyno" its so corny.