Rb25 + Gt3076R & Mods, Made Low Power On Dyno Tune Why?

[DriftSquad]

Hey guys got a problem my car didn't make the power I think it should have made.

Rb25det s1

Gt3076r .63 rear

High mount manifold

50mm wast gate with 14psi spring

800cc injectors

Bosh 044 fuel pump

Turbo smart fpr

Upgraded coil packs

Greddy copy intake.

3inch straight exhaust

Blitz dual solenoid boost controller

Microtech Lt12

I only made 296rwhp was the best run of the day at 18 psi

Seems low compared to others iv seen on this site?

Also I did notice that boost drops off from 18 nearly back to 14 at the top. Fuel and air sitting on about 11.6 . Any thoughts?

Edited February 6, 2014 by DriftSquad

[ARTZ]

Wastegate too large and poor control maybe...or restriction somewhere

[Ben C34]

What dyno? Do you have the chart?

[scotty nm35]

You will need a stiffer spring in the gate imo, and the .63 rear won't be helping things.

Can you get us some pics of your setup? Was the exhaust dropped on the dyno?

[Dose Pipe Sutututu]

post up your timing maps, could be a mixture of things

[DriftSquad]

I didn't get the chart as I was not happy with the tune. Tuning was done at Godzilla motor sport. On his dynonamics awd dyno

Edited February 7, 2014 by DriftSquad

[Ben C34]

Not happy with the chart is even more reason to get the printout. Can you get him to email it to you?

[Dose Pipe Sutututu]

and tell them to send you the tune file

I have a feeling the tune was shit house, also because it's a microtech lt12.. they're so clunky to tune with.. 2x tables to do essentially a single table can do.

[WMDC35]

Any comments from the tuner?

[DriftSquad]

I'll ask him to email it to me. Marks pretty good tuner. I mean it is a microguess lt12...

We had to pull some timing cuz she was pinging on boost. He said he thinks the .63 housing is to small

[Sinista32]

He's right

[zebra]

.63 hosuing will still go 300rwkws

Hell "mafia" made 314 with a .63 IW version on the standard manifold

What exhaust manifold is it?

[DriftSquad]

Not sure it's just a stainless manifold with gate mounted to it. The power I Made is not much better then a standard rb with a tune..

Edited February 7, 2014 by DriftSquad

[scotty nm35]

Mafia had a heap of water/meth to help I seem to remember...

[Sinista32]

3076 / .81 rear

315kws average

Edit - with supporting mods including FMIC which I did not read in your initial post

Edited February 7, 2014 by Sinista32

[scotty nm35]

Not sure it's just a stainless manifold with gate mounted to it. The power I Made is not much better then a standard rb with a tune..

If you had bought a decent standalone and left the FFP, stainless manifold, fpr, boost controller etc off the list, you will have had more money to spend on finding the issue on the dyno.

[Sinista32]

what said above is don't under estimate OEM, until you reach the limits.

Don't buy gear that's unnecessary for the power level wanted

[AngryRB]

300hp is about 225kw on 14psi and its a 0.6rear, so really its not terrible, maybe the exhaust isn't flowing ( restrictor in muffler etc) so the timing was held back?

[ARTZ]

nah its terrible...a 3076 .63 will make alot more power than that...especially with an external gate...

ThAt engine sure does look puurty though

[zebra]

Mafia had a heap of water/meth to help I seem to remember...

Made high 200s without though