HKS3037S 56T Retune

[Steve]

It was an interesting day yesterday.

I was still having a few probs with my initial tune of the new turbo, mainly at idle and light load.

I took my car to Martin Donnon to see if he could help (stupid quesiton). After taking a look he told me there was nothing for it but a full retune. I cringed as I had just payed $585 dollars for 4 hours of dyno work and a new set of plugs.

Less than an hour later, the car was running sweet and I had an extra 26rwkw.

The dyno was run in shootout mode, but the correction for the day was only 1.029, so not alot of difference there.

Boost still hits hard as hell, goes from normal to nuts in about 300rpm, then just pulls all the way redline.

Attached is the new dyno sheet, with before and after runs boost set at 1 bar.

[Steve]

And I forgot to mention. This is a really good example of why a good dyno operator is worth paying a bit extra for. 4 hours vs 1, and a better outcome:D

thanks again Martin.

[Guest RedLineGTR]

good stuff...looks bloody sweet

[rob77]

Nice results steve. I cant wait to get my new ecu in and my car tuned

[Roy]

Thats a healthy looking output, and at 1bar. You must be stoked!

[Steve]

Cheers,

yeah I am pretty happy,

Rob, getting a tuned ecu will make a huge difference. I would be expecting you will be getting well into the high 200s.

[rob77]

Going to keep it around 350-370hp @ wheels due to the fact of having stock internals. One day I might get around to replacing them, but I doubt it... probably buy a GTR before that happens

[bodge]

Steve, what is your complete setup to produce that sort of power?

[BOOSTD]

How much did Martin charge out of interest.

[Steve]

turbo (0.61 turbine AR), tuned lenght manifold, HKS 40mm wastegate, 3" system, pod in box(sealed during the run) with a 4" cold air feed, hybrid cooler (600x300x76), hills plenum (but I will be changing it), power fc with boost control, 550cc injectors, bosch 044 fuel pump and a twin plate clutch. Also using a trust type R bov plumbed back.

[Steve]

Cant say exactly what he would charge for the tune, a guy owed me a favour, and hooked it up. Maybe drop him a pm?

Rob, buy a head gasket, merli is selling a brand new HKS 1.6mm for $470 and give it heaps, you know you want to:D

[bbenny]

Steve: you bastard! you have way more power than me wish i had Martin Donnon up here in sydney to tune mine, thats a wicked increase from mid to top! I still havent got that ecu tuned yet, ill be hoping to make 220rwkw.

well done

[Steve]

bbenny, thanks (I think;)) I probably need the extra power cos of the weight difference:p

Martin does get up that way from time to time, perhaps you should see if you can get a couple of guys together and do a group booking for tunes:D Either that or come for a drive.

Didnt Dr Drift offer to head up that way?

[Guest INASNT]

sweet results steve, wonder how the 0.87 turbine housing would go with the same tune and boost!

When do u get full boost by??

[RS500]

Steve,

very impressive power there dude. good stuff.

was the power run done in 4th gear?

[Steve]

Thanks guys.

INASNT, on the dyno it was hitting one bar around 3000rpm, perhaps a little later on the road. Its a bit hard to tell cos I am spending more time trying to keep the back end under control than watching boost and revs:) thats even in fourth gear.

RS500, the run was in 4th.

[Guest INASNT]

Originally posted by Steve

Thanks guys.

INASNT, on the dyno it was hitting one bar around 3000rpm, perhaps a little later on the road.  Its a bit hard to tell cos I am spending more time trying to keep the back end under control than watching boost and revs:)  thats even in fourth gear.

RS500, the run was in 4th.

so u gonna stick with the 0.6 turbine housing for awhile?

[EVOIV]

Steve: I have a question for you and any body who has tuned their cars. Why is it that sometimes when you look at a power curve the curve is not perfectly smooth. I'm not having a go at your dyno chart, I'm just wondering can it be made smoother? Is this due to the tuner's ability? Maybe the ECU? Or what? Does anyone know? I've seen some power curves smoother than others, just wondering that's all.

[EVOIV]

Also, nice work on getting that much power out of the GT3037S. That definitely is a bunch, and it seems that you have little lag too...great results!! I hope to get just as good results with my next car, hopefully GT3037S equipped too

[Steve]

Definately sticking with the 0.61, will see how it goes with more boost, but so far it still pulls harder than a 2 bob whore to redline with 1.2bar. I may just experiment with a larger housing to see how it goes though - just gotta find a donor:D

The power curve moving like that is the boost controller learning. When the ecu was reset, the boost had to be reset, so the duty cycle needed to be guesstamated, then adjusted appropriately. All is good now, boost holds perfectly.

Bugger all lag, and the turbo hasnt even got close to showing its colours yet, that is going to happen when the head gasket goes on - soon I hope:D