Dissapointing p1x numbers

[Jaywebs]

Idk. Maybe Im missing something. 19pp1, p1x stage 2, 4 inch pulley, fore triple pump return style fuel system, off road kooks 1 7/8 headers, e85 verified good fuel, 20 degrees timing, 16lbs at 7850 and only making 718 wheel. Im under the impression that something else is going on i.e boost leak as i feel this thing should be making way more power than it actually is. Or am i completely wrong and expectations too high??? Any body else have a similiar setup to me and if so, what are you guys making.

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[I Bleed Ford Blue]

718 wheel and you're complaining? Assuming a 15% driveline loss you're at 844 crank.

 

[Jaywebs]

Again like i said, maybe my expectations are unrealistic. I was under the impression this blower will make 900 wheel with the supporting mods which i have. So in essence, yes i guess i am complaining a bit lol.

 

[turnswrench]

Do you have the 8" (2015-2017) or 7.6" (2018+) procharger crank pulley? Either will fit on a 2018 from my experience.

 

[AZ_whippleS550]

Again like i said, maybe my expectations are unrealistic. I was under the impression this blower will make 900 wheel with the supporting mods which i have. So in essence, yes i guess i am complaining a bit lol.

sounds low to me I made 700 wheel on 11lbs on race gas through stock manifolds and cats

 

[Jaywebs]

Do you have the 8" (2015-2017) or 7.6" (2018+) procharger crank pulley? Either will fit on a 2018 from my experience.

I believe it's the 7.6.

 

[Jaywebs]

Regardless the numbers don't really make sense. 718 at 16lbs. 16 lbs should be making 800 plus. 12 lbs should see 700ish.

 

[deanm11]

I'm plotting my 2020-10spd PX1 build, so while I yet to have direct experience, from LOTS of studying the history here, I think you are right to believe you are low. I think minimum 800 based on your build and timing. Would help to show everyone: dyno graph, log with timing and O2/AF ? Dynojet? 6-speed car ? Dyno in what gear ?

 

[Jaywebs]

I'm plotting my 2020-10spd PX1 build, so while I yet to have direct experience, from LOTS of studying the history here, I think you are right to believe you are low. I think minimum 800 based on your build and timing. Would help to show everyone: dyno graph, log with timing and O2/AF ? Dynojet? 6-speed car ? Dyno in what gear ?

Yes, I agree. I'll have a copy of the dyno on sat and will definitely share with everyone and hopefully someone can make sense of it. Car is a 6 speed and I'm pretty sure was a 4th gear pull as that should be the 1 to 1 ratio. Not sure what type of dyno it is though. As for your build, I can say the p1x is a great little blower. The biggest issue is that you really have to get that thing turning before you get any boost what so ever out of it. Maybe different with an a10. Not sure. If I had to do it over again, I definitely would have opted for a f1a or at least a d1x.

 

[Whitedevil95]

What kind of Dyno and correction?

 

[Jaywebs]

What kind of Dyno and correction?

Im not exactly sure. Doesnt really matter considering the actual numbers are way far off from where they should be.

 

[Whitedevil95]

Im not exactly sure. Doesnt really matter considering the actual numbers are way far off from where they should be.

It does matter. I’ve seen some brands and corrections vary by as much as 100rwhp. Find out. My buddy made 840 on a standard dyno jet and then a couple weeks later made 720 on some kind of mustang dyno.

 

[Jaywebs]

It does matter. I’ve seen some brands and corrections vary by as much as 100rwhp. Find out. My buddy made 840 on a standard dyno jet and then a couple weeks later made 720 on some kind of mustang dyno.

I know there is a difference between the two. I will definitely have to inquire what type it is.

 

[fuelforfire87]

Definitely seems like the numbers are low, but like others were saying it could be the dyno. Mustang dynos especially are known for reading low. For comparison i made 800 whp on a dynocom dyno with a 4.25 pulley on E85 with a procharger D1SC (about 13.5-14 psi). I know not the same head unit but the P1X and the D1SC are pretty close.

 

[wingnutt]

they don’t call mustang dynos “heartbreakers” for no reason!

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