I would like to know if its normal that my tuner not be able to make more that 380 whp on 91 octane pump gas at 13 psi.

i have a inline pro sidewinder manifold with gt35r turbo. walbro 255 lph 750cc injectors. stock block with inline pro 3mm headgasket.

i try a test with my tuner and cranck the boost to 18 psi and i made the same hp because he need to drop the timming.

do you think i dont have enough fuel eith this injector and this pump.

 

the 3mm hg is killing you; your injectors aren't helping

 

Take out the 3mm Head gasket and you'll make the same/more power on less boost. Those injectors might get you a little more power than that. What was the injector duty cycle at that Horsepower?

 

Something is wrong besides what has been mentioned though.

Whats your dp and exhaust setup? I made 450whp @15psi w same mani, smaller turbo.

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i have 3" downpipe with 3" exhaust but my gt35 have t3 flange. I need help to find what i only made 380Whp.

 

With a 3mm head gasket you will need to run a lot higher boost to make higher numbers. The reason you made the same power on higher boost is because you are most likely running out of fuel. If you remove the 3mm head gasket and put an OEM Honda gasket in you should make more power on less boost. I asked before, what was the injector duty cycle on 13 psi and 18 psi?

 

i dont know what is my duty cycle. Can i find this data in my map.

anybody have try the etune with evans tuning. Probably the best option for me to tune my car because i live in quebec canada.

 

something else is wrong. did you check your compression on the motor?

 

or that is what happens on 91 oct?

 

no, a local made ~480whp on the same dyno I used, he was on 91 oct, FR mani, gt35, ~14psi


OP- maybe you have a knock-off walbro fuel pump