test pipe

 

Just look at my race gas map....the power is there to be made....but the variables needs to be right...

 

To set boost properly you need a MAP sensor and you need to log the boost. Setting the boost by the gauge is inadequate since gauges are notoriuosly inaccurate.

I had a Defi D gauge and when I finally got a MAP sensor and logged the boost the gauge was off by 1-2 psi.

IIRC, the wastgate boost on a stock turbo is 11 psi, so your gauge showing 14.5 psi means that it is off by 3.5 psi. I am not sure of the 11 psi though.

 

the hks 272's are fine...trust me, especially on 91 octane.

even though you have a stroker, your peak power rpm looks low, ~6k, i would try retarding your cams a bit & give it a go.

i wouldnt hesitate to try -2/-2 or even -4/-1....try something to move that power up in the rev range.

my car likes the cams retarded a bit. i gain more top end power for ~200 rpms in peak boost rpm, but the car still drives nice.

i plan on posting my calculated hks 272 power sweeps tomorrow, all conducted on 91 octane.

i understand that i have a 2.0, but what you'll see is the relationship to power vs. timing vs. boost curves.

btw, do you know what your compression ratio is?

 

You've got a 2.3L bottom end?

Be a man get rid of that little turbo and step up to a GT35R

 

stock compression 8:8:1. Wesico pistons. I chose not to go with a higher comprssion because the poor 91 octane we have.

 

I would expect 380WHP and 450 FP's with a 2.3 green.

 

With 21psi, 91 octane and 100* weather?

 

well not exactlty, but 350 on a stroker and a Green is sad IMHO. He should maybe go for some METH. Displacment adds alot of power and torque and helps alot even on 91 Octane. The Green being a more efficient turbo should be able to make alot more then we have seen.

Try METH.

 

No stock turbo, stock 2.0L in 100 degree weather with 21psi and 91 octane would make 352awhp, thats my point. Also, I have not seen much hp gains if any from going to a stroker. Maybe some mid range horsepower, but not peak. Torque, yes, obviously.

Clearly, meth would be a good showing to make some more power, but even so, we are talking about obscenly hot temperatures, crappy gas, and lame boost. I gurantee if this car had 93 octane, 23-24psi and normal temps, it would make MUCH more power.

This car had the WORST possible conditions possible, and Im still baffled why it was running 21psi when others even with 91 octane run 23psi. Was it knocking? Maybe. But still, my point stands and many agree. If this was all on 93 octane, 23psi, well then, we'd have something to argue about.

Stock turbo cars can obviously make this power, but definitely not in those conditions, with that gas at that boost.

 

IDK Man, 21PSI is right where the OEM Turbo likes to play. I still think these numbers are very low.

 

This isnt the OEM turbo, this is a Green, which has shown to like more than 21psi.

Yeah the numbers are low for "A Green/2.3L". I dont think they are low for the conditions, gas, and boost.

 

I bet with a few more psi on 93oct... with a cooler day the #s would be right there.

Was there any head work done?

 

That is incorrect. Torque yes, horsepower, not much.

 

i disagree. otherwise, mitsu would have stuck a 1.7 liter in our cars to get better gas mileage & emissions.

that statment is very generalized & maybe applicable to the long stroke / small bore of a 4g63 2.3 engine.

the only replacement to discplacement is what makes our cars scream = forced induction. that is where you artifically increase the capacity of the engine.

i understand if you spin the tar out of engines, you can make same or more power with a properly modified engine & supporting hardware/software with a smaller engine.

if engine size doesnt matter, f1, cart, irl, winston cup wouldnt have reduced the sizes of their engines over the years.