I just had my car dyno tuned at Road Race Engineering for both pump 91 octane and E85 at the same time with the HKS GTII 7460R turbo. I thought some people would like to see my results with this turbo on my Evo IX.

Mods:
HKS GTII 7460R turbo
Tomei Expreme exhaust manifold
Tomei Expreme downpipe & O2 housing
Mil.Spec 100 cell cat
Mine's 80mm Ti exhaust
Kelford 272/272 Cams
SuperTech valvesprings & retainers
ARP headstuds
RC 1200cc injectors
ETS 3.8" Garret core FMIC
Nisei full intercooler piping
AEM intake


91 tune (23psi):


E85 tune (27psi):

 

380 ft/lbs @ 3,300 RPM and 400 @ 4k Nicely done!

 

Xenope can you ask Mike W how long the dyno pulls are? 12sec? 16sec?

Very nice power, nice results for 27psi

 

Fun huh?

 

nice, must be fun on the street what kind of power do stock turbo powered cars put down on the RRE Dynapack on 91? guessing around 320-330? how does it feel compared to the stock turbo?

can't wait to throw mine on

 

It feels quite good :]

I emailed him, waiting for his answer.

Yep, something 91 could never provide...

Its damn fun, but the MPG is crap lol
They do about 330-350 depending on the extent of their mods (porting, etc).
I can't say how it feels compared to stock turbo since I switched to E85 with this turbo and haven't gone back to 91 even though the nearest E85 station is a 2 hour round trip for me lol. I'm sure it feels better than stock though.

 

Nice. Congrats! It looks like this turbo is alot of fun!

 

reds/blacks/greens typically make 300tq at 3500-3800rpm.
HKS 300tq at 3000 rpm!

pure awesome!

 

The pull was 12 seconds. What does the length of the run affect?

 

how long the run is will determine what the graph looks like.
It has little affect on peak power.
Here is a graph of mine to show you what i mean.
The longer the run, the more to the left the power curve will be. This is because there is more time for the turbo to spool up. Think about 2nd gear vs 3rd gear on the street etc.



this is the exact same car, with 2 runs done about 20seconds apart.
blue line is a 12sec run, red line is a 8 second run.

I should have done the same for my new setup, but i forgot. But you see what i mean
Mike W starts his runs @ 2500rpm too, so if you have a *tiny* turbo you will actually be on full boost when the run starts. There is nothing wrong with that though. My tuner starts his at 1500rpm so that doesn't happen.

Very good results!

Here is my sheet from my 2.3 + mivec with FP Red @ 23psi



The solid lines are a 8sec run, a 12sec run has max boost at about 3500/3600 rpm.
boost plot



sorry for the hijack! just explaining how these dyno's work

Oh and FYI, we changed between all the correction factors for the dyno from none to SAE and DIN, power difference was about 5hp between all of them

Cheers, Mike

 

Interesting, I didn't know that. Thanks for the info!

 

nice numbers xenope bump for socal evos

 

good solid numbers...real good street car...

 

nice numbers!

 

451whp @ a measly 27psi with a cat! very nice indeed gosh i cant wait for my stupid cams to show up already so i can get tuned on my HKS turbo