18 GT A10 Procharger 4.25in pulley

[usmade75]

Brandon91,

I'm on the 4.75 pulley, 93 octane, and 1/2 ounce Boostane per gallon for an adjusted 99 octane. Mine rips.

if you don't mind me asking, how does it run while just on 93? Logs look ok without injectors and BAP?

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[TRP45ACP]

Im running a D1x with 4” pulley stock motor 2020… Made 873 on 93 with some additive…. Makes 18psi…. now on e85 tune prob makes in the 930-950 range…..

but she took out the A10 only 7000 miles on the car..

I too, run a 4" pulley on my D1x stick car. I have no definitive power number; however, the car runs very well. I did begin with a 4.63" pully, dialed in the tune and simply moved down to 4.25" and then 4". Fueling, knock and timing look great. I do run a crank support and stud as well.

 

[schmeky]

usmade75,

Actually very well.

I only run the boostane in case I have a bad batch of 93.

 

[5.0_Lojos]

I too, run a 4" pulley on my D1x stick car. I have no definitive power number; however, the car runs very well. I did begin with a 4.63" pully, dialed in the tune and simply moved down to 4.25" and then 4". Fueling, knock and timing look great. I do run a crank support and stud as well.

About to do the same. Im on a 4.63 and not happy. Just ordered the 4.25. Tuner says no retune required. Im on pump 93. Hopefully this pulley swap wakes her up a bit more

 

[TRP45ACP]

That is great. Personally, I would be very careful running a 4.25" D1X on pump gas. More specifically, I wouldn't do it.

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