miker61588

i dont know what one to buy dfi by accel or the felpro version fast?? they both look good but which one is better??

Monty

No comparison - the SpeedPro/F.A.S.T. It's worth the money, but it depends in what you're building. The DFI system, especially the new DFi 7.0/Calmap2000 is a nice system and works very well. For a street setup it's plenty adequate, and there are plenty of racers that use it as well. But when you want to get serious or if you are going to race competitively, the F.A.S.T. system is the way to go

I had the Accel DFI on my last motor, a SuperRam 383, and now have the SpeedPro/F.A.S.T. on my SBC427.

SloRvette

F.A.S.T. with the wideband option. It doesn't get much easier to tune.

Monty

Exactly. That's what I have SpeedPro Sequential, Wide Band O2, and Individual Cylinder Fuel and Timing Control. Nothing easier than typing in an A/F ratio, and the ECM adjusts the pulse width to achieve that A/F ratio. The you just adjust the applicable VE point by the appropriate O2 correction percentage for zero O2 sensor trim. WHen I had my motor on the dyno, and we were tuning for peak torque, we tried A/F's from 12.7 to 13.2. Ended up making maximum torque at peak with 13.1 A/F, gained almost 20 ft lbs compared to 13.0. Lost 8 ft lbs at 13.2. Not many systems allow that amount of granularity.

miker61588

where can i buy the fast with wideband any good places that sell it cheaper then others? if i dont get the wide band option can i use the regular set up with a blower?

Chris@SD

Spring for the wide band! Very nice to have. Give me a ring Monday next week or send me an email. We carry the FAST systems. :)

QUICK 35TH

Felpro unit, called Speedpro now, is the way to go.
I have it on my car, wouldn't trade it for nothing.
It makes everything easy....
If you're serious, my friend is a dealer for them, maybe he can help u out on price. If interested, let me know.

Good luck.



[Modified by QUICK 35TH, 9:46 PM 11/21/2001]

Bob86ZZ4

I don't see any info on the SpeedDemon site about the FAST system. Where can a guy look into them?

miker61588

thanks for the input

righton

I'm also interested in the Speed Pro could help with a phone number joe