Advice: Sequential distributor?
 

So I am in the middle of yanking my Accel Gen VI DFI. Replacing it with FAST. Hadn't really thought about it,but I'm at that point that I should decide. Should I go with a FAST sequential distributor for $350 or whatever? Or should I just "lock up" my MSD distributor and save the cash? (i'm turbo'd and doing this to be able to retard timing under boost) From what I understand, sequential really just gives me a lil better efficiency up to about 1500 RPM. Any thoughts or suggestions? Thanks!

The FAST distributor will make it true plug and play, and sequential. All good things.

Whats the reason to yank the Accel setup?

It's an Accel Gen 6 (VI). It just old and antiquated and doesn't do what I want it to. (I have no idea why it was put in the car!) Most importantly, it does not have the control to retard timing under boost. The new Accel versions are much better, but I just decided to go with FAST for many reasons. Mostly "my tuner" is well versed in FAST and that's the most important part.

I'm no expert on this, and maybe someone else can comment on this, but I believe you need to have a dual sync distributor to run sequential?

If you want to run bank to bank injection (and it works fine), then your MSD distributor is fine. However you really should rephase the reluctor to rotor relationship such that the FAST receives the signal from the falling edge of the pickup at a crank lead angle of 55-60 degrees BTDC (ideal for a FAST) but then you want the rotor pointing directly at the cap terminals at the timing required at your peak torque/cylinder pressure to reduce the chances of a misfire. MSD sells the adjustable reluctor wheels.

The FAST distributor already has the reluctor to rotor relationship set internally at a 50 BTDC crank lead, and also has a 1x per rev cam sensor output so you can run sequential. The Accel Dual-Sync distributor is the same sort of thing however it has an adjustable rotor so you can easily alter the rotor phasing, however it requires a little bit of re-wiring & connector swapping to work with a FAST.

You can run sequential with an MSD distributor and a FAST, however it requires a crank trigger also. You clip all but 1 paddle on the reluctor wheel in the distributor so it serves as a cam sensor, and the crank trigger does the rest. This is more accurate than having the distributor signal everything as you don't have to deal with distributor gear lash, cam twist, timing chain slop, etc all bouncing the distributor around and leading to inaccuracies in the signal to the EFI box.

Thanks for the valuable info. I am reading it over and over, letting it all sink in. It sounds like, due to my limited experience... If I just pay for the FAST distributor, everything is done for me. I know I could accomplish the same with my MSD, but whether I do it totally correctly is the question. I will study, but at this point Im leaning towards FAST dist.

sequential
 

run sequential and buy yhr distributor make life so easy:thumbsup:

If Bob says do it, take his advice do it..... He will not steer you wrong... I get a ride once it is completed...

Happy Holidays
Mike

Hey Mike! Believe me, I do whatever Bob says. But on this one, he has said it's a toss up and its just up to me. What an awesome guy he is though! Merry Christmas to you also.