HELP! Not making more power with boost!

[dkonig]

Currently running an SR20DE with the following mods;

-Conversion to CAS and coil packs

-Wolf 3d Management

-GT28 400HP Ball bearing turbo with high mount manifold & external 45mm gate

-Trust Cooler

-Bigger radiator

-Big fuel system etc etc

Running about 10PSI of boost it put down 248RWHP, winding it up to 17PSI however with retune picked up about 2HP!

I feel there must be something holding it back, it still has a Cat converter in it, it may be melted, am thinking of removing it next week to see if this helps things, failing this can anyone suggest anything?

Cheers

Daniel Konig

[ylwgtr2]

Currently running an SR20DE with the following mods;

-Conversion to CAS and coil packs

-Wolf 3d Management

-GT28 400HP Ball bearing turbo with high mount manifold & external 45mm gate

-Trust Cooler

-Bigger radiator

-Big fuel system etc etc

Running about 10PSI of boost it put down 248RWHP, winding it up to 17PSI however with retune picked up about 2HP!

I feel there must be something holding it back, it still has a Cat converter in it, it may be melted, am thinking of removing it next week to see if this helps things, failing this can anyone suggest anything?

Cheers

Daniel Konig

usually a blocked cat will show up with very slow picking up of vacumm so blip the throttle and see how fast your vacumm needle or the 3d hand set gains...

[tomj]

Your cooler may not be effectively cooler the inlet charge any more. Thats one thing that may be wrong

Maybe your running out of spark top end with that much boost im not sure.

Just a couple of quick ideas.

Tom

[dkonig]

It picks up vacuum at what appears to be a normal rate, however it is much laggier than expected...

Cooler came of a 600RWHP GTR so I dont think that is the problem.

Also, how will I know if it is running out of spark? They are the stock coil packs, which I know are good for more power than that, and have gapped the plugs right down to 0.5mm.

Anyone got any other suggestions?

Daniel Konig

[MrMayhem]

Remove the exhaust restrictions

whats the max power a de has made

what sort of cam profiles are on the de

if you were running out on the ignition side youd see that on the dyno

when you pushed teh extra 7psi what was teh final afr

[dkonig]

Exhaust restrictions will be the next step, maybe tonight.

Dont know the max power of a DE in Aus, but have seen several in US over 400HP at wheels.

Cam profiles on the DE are slightly more lift and slightly more duration than DET

AFR is 12ish no matter what boost.

Daniel Konig