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Old 04-12-2017, 04:45 PM   #13
TKat13
Mach-T
 
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Join Date: Jun 2004
Location: DFW
Posts: 2,865
Re: Help with tunning and fuel pump

Quote:
Originally Posted by 01TruBluGT View Post
I would imaging the SVT Focus pump supports PWM, are you saying you only need to adjust time if the pump DOES NOT support PWM??
The Focus pump supports PWM. and no, that is not what I am saying, your tune may need to be adjusted after a swap, just ask your tuner. I just remembered that when I put the 340lph in, I also had a boot-a-pump for the factory pump, I had to readjust everything because with both there was not enough adjustment range. I am sure a focus pump is fine.

BTW, I agree, the old 255s did not support PWM and I had a buddy go through three before we figured out why. Then it was painfully obvious.

I did a big write-up on this a few years ago here, I will see if I can find it.
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Darrell
Black '04 Mach 1
Track Times (bone-stock w/drs):60 ft - 1.90 | 1/8 - 8.67
(100 shot,E85,4:10s,Street tire):60 ft - 1.67 | 1/8 - 7.88
New build - 750rwhp; not track tested (yet)
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Tuned by Manny @ HPP
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