Thread: Project Turbo Parts car !

Originally Posted by darkhorizon

Bro, a 2.6 pulley will BURY a stock maf, screen or not... stock injectors at even 15psi more base pressure is not going to even get you a 38# injector.

"30% more power" is not happening just because a turbo is putting air in your motor.

There is clearly something you don't know about these injectors and the dutie cycle reported. I'm not sure I feel like sharing, it won't change your mind obviously you are dead set on your opinion.

I'm not sure what you read into my post and how you understood it. But the turbocharger did put 30% more power to the ground at the same boost level on my set up.
That is because I am not intercooled.

Non intercooled boost is less dense and much hotter. 16 psi non intercooler does not provide the density of 16 psi intercooled.
The turbocharger via the massive intercooler in front is 75-80% more efficient than any core you can sandwich between a supercharger and an intake.

This is why 16 psi of turbocharger power feels so much more than 16 psi Supercharged non intercooled. PLus the fact we have tons of parasitic loss in the M90 !

Boost is completely pointless measurement. In your case boost is how much you are floating the valves... its pointless when you have a precisely calibrated maf sensor on there. Intercooled or not the maf will tell you how much air you are putting I to the motor. Combine that with afr and how much fuel you are putting in and you can calculate power with extremely high accuracy.

Originally Posted by darkhorizon

Boost is completely pointless measurement. In your case boost is how much you are floating the valves... its pointless when you have a precisely calibrated maf sensor on there. Intercooled or not the maf will tell you how much air you are putting I to the motor. Combine that with afr and how much fuel you are putting in and you can calculate power with extremely high accuracy.

I'm not floating the valves. I'm not revving it very high either, it pulls so well at lower RPM no need to rev it past 5800rpm.
As for calculating power, I don't really care... I mean, my goal is to have some fun, make the car fast, no matter how much power I'm making.
Right now I know it's fast for what it is. Mostly stock car with a turbo kit on it. Very happy with it.
But in my opinion and I've built many cars and machines, I know how to calculate HP from weight and acceleration. This ain't no 300HP.
It's more like 450HP and since the car has been lightened, it runs like a raped ape for only 16 psi !

I will try to hit the dragstrip this weekend. We'll see how she does.

Wait...450hp what?

Its probably around 300whp. Maybe like 320 or so... which is more than any m90 setup out there really.

You are floating the living **** out of the valves. 100% chance.

^This. And DH and I rarely agree. LOL

Originally Posted by darkhorizon

Its probably around 300whp. Maybe like 320 or so... which is more than any m90 setup out there really.

You are floating the living **** out of the valves. 100% chance.

450 crank HP, WHP maybe 360 or so I would guess.

Not a chance in hell unless you are maxing out the maf sensor by 300hrz

Originally Posted by darkhorizon

Not a chance in hell unless you are maxing out the maf sensor by 300hrz

I think you really a little too much on the sensors that are not very accurate and can be easily fooled by air intake flow changes.
I have tuned MAF cars for a long time, including many DSMs (Eagle talon) with small and big turbos at low to very high boost.

My Blue 07 GTP reads a 58 lbs per min on my 2.8 pulley but makes a lot less power than my Turbo GTP at 48 lbs per min.
Not even close.

Lol bro ive built more custom mafs than youve tuned.... they are nearly perfectly acccurate in terms of hrz vs airflow in any car.

Originally Posted by darkhorizon

Lol bro ive built more custom mafs than youve tuned.... they are nearly perfectly acccurate in terms of hrz vs airflow in any car.

You make me LOL, how do you know how accurate they are ?
Also, how do you know the reported Duty cycle is accurate ?

Well we could calculate duty cycle if you wanted to sit down and look at numbers...

Or get me an oscilloscope and I'll tell you definitively.

Ive done extensive testing of ipw I can tell you exactly when the ipw going up doesnt make more fuel go I to the motor... its accurate.

According to my 1/8 mile E.T and MPH I will be running high 11s @ 120 mph.
How much HP does it take for a 3300 lbs GTP (weight with driver) to do this according to you guys ?

Originally Posted by TwinV6GTP

According to my 1/8 mile E.T and MPH I will be running high 11s @ 120 mph...

I'll believe it when I see it.

390 to 420whp.

I went low 120s with the same setup with 500lbs less but I was flowing alot more air than you.