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Misfires, anybody else get'em? (Attn: Moose)

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Old 05-05-2008, 07:36 PM
  #11  
moosestang
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Default RE: Misfires, anybody else get'em?

ORIGINAL: aclass


Yes, its a little higher when you first punch it, 14.7 was just the lowest value I notice. The number changes pretty quickly so to be more accurate I'd need to record it.

Dude, all these blown engines are starting to worry me.,,,
I would record it along with your rpms at the same time, that's what I do. that way you know where it's pulling timing if at all.

Did you get the tune for 91 or 93? I got 91, but always run 93 because there is no 91 here.
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Old 05-06-2008, 08:41 AM
  #12  
MustangGT0405
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Default RE: Misfires, anybody else get'em?

Yeah I got the 91 tune for safety. I plan to have VMP make a 91 octane tune as well when I go to 10psi. Trying to stay conservative so I dont have that problem.

You guys might want to think about relocating your IAT's too. I know Moose and I have been over it as far as whether it is needed or not, but I like to see (and the PCM) the real IAT's.

Moose, on the Dyno I saw 16 degrees of timing. I should think I would be save up to about 19 on 91 octane.

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Old 05-06-2008, 10:11 AM
  #13  
aclass
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Default RE: Misfires, anybody else get'em?

My tune is for 91 also, quite frankly I didnt think FRPP had a 93 tune since you cant get it just anywhere, and there wasnt a choice that I remember when filling out the voucher.
I think I am gonna pursue a little less boost for now, all these blown engines and the fact that my clutch is struggling to hold the Whipple has me nervous...

MustangGT0405, what psi are you running now?
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Old 05-06-2008, 10:22 AM
  #14  
moosestang
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Default RE: Misfires, anybody else get'em?

ORIGINAL: aclass

My tune is for 91 also, quite frankly I didnt think FRPP had a 93 tune since you cant get it just anywhere, and there wasnt a choice that I remember when filling out the voucher.
I think I am gonna pursue a little less boost for now, all these blown engines and the fact that my clutch is struggling to hold the Whipple has me nervous...

MustangGT0405, what psi are you running now?
My clutch worked fine with the 8psi pulley (3.625 in) and I went back to it when it really started to slip. He has the 8psi pulley as well. There was a place for 91 or 93 octane on ford racing website when I filled mine out.

MustangGT0405, I just past the 500 mile break in for the clutch so i did a WOt run in 3rd. It hit 19* of timing. Not sure If i've ever recorded it with the 8psi pulley, but obviously 18.5* is not the max timing. The car really jumps now on the 3-4 shift thanks to spec.


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Old 05-06-2008, 10:43 AM
  #15  
MustangGT0405
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Default RE: Misfires, anybody else get'em?

8 psi. With the FRPP tune and relocated IAT (hurting my power now I think) I made 416rwhp and 398 ft lbs. I believe my motor would last 100k miles easy with this set up.

Once I have my dyno tune I might switch back and forth between the 8psi pulley and 10 psi pulley. I plan to tell Justin to be conservative on my 10psi tune so I am not that worried about blowing the motor.

I figure if I can make 450rwhp at 10 psi real safe on a 91 octane tune and run 93 I shouldnt have any issue.

Here is my stock shortblock build list so I can say I am done, till forging that is.

10psi pulley and tune
Mcloed Clutch
Alum FW
Alum DS
Tru-trac with 3.90's
Frankentensioner
Elec H2O pump
1 3/4 LT's
H pipe

Hoping for about 470rwhp and 11.5's on Slicks with me driving.
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