Best Fuel Management for Twin Turbo First Gen

[Rick Giles]

Which fuel management system is best for first gen. smallblock with Holley Stealth Ram and twin turbos? Want great drivability. Opinions and experience please.

[SuperB70]

Well, it depends on your budget. If you got like 2-4 grand to spend, get a Motec, Haltec, EMS, Autronic, Pectel, Gems, DAT or something like that.
A real EMS. Then you got a ton of things to play with, a PRO-way to go.

In other hand, if you dont have tons of cash and you want to diy and learn, then get an MegaSquirt 3, best for DIY, most of the same feature than boxes on my first list but more hands on type of thing. Biggest thing in EMS these days around the world. Everything can be found in the net and if you have a problems, help is just email a way.

In TT engine you want to seqvental ignition and fuel, so you can tune it more accurately and you will have a data logger what to check when you are tuning it or run in to trouble.

[supremeefi]

I'll put the Accel up front for drivability, even against the Haltecs etc.
Lots of programming and tables for transient fueling (driving), more than any in it's class. Great boost control as well.

I'll help you tune it as well. not hard.

Thanks
Mark

[camcojb]

Originally Posted by supremeefi

I'll put the Accel up front for drivability, even against the Haltecs etc.
Lots of programming and tables for transient fueling (driving), more than any in it's class. Great boost control as well.

I'll help you tune it as well. not hard.

Thanks
Mark

I think the Accel Gen VII is the MOST difficult to tune system I've run across. I would never recommend it for a beginning or intermediate tuner, but if you have a pro who's familiar with it, it is very capable.

[badmatt]

electromotive Tec3R

[Rick Giles]

Looks like I'm going with the Holley Dominator that has some self tuning capabilities, boost control, traction control option, and lots of other possibilities. Dennis at Moore Racecraft is the man to deal with as I'm told. He helped with the design build and has fantastic customer service.

[camcojb]

Originally Posted by Rick Giles

Looks like I'm going with the Holley Dominator that has some self tuning capabilities, boost control, traction control option, and lots of other possibilities. Dennis at Moore Racecraft is the man to deal with as I'm told. He helped with the design build and has fantastic customer service.

Dennis is a wealth of knowledge on that system. Is he local to you? Always nice to have a tuner that has your car in front of him for tuning.

[supremeefi]

Originally Posted by camcojb

I think the Accel Gen VII is the MOST difficult to tune system I've run across. I would never recommend it for a beginning or intermediate tuner, but if you have a pro who's familiar with it, it is very capable.

Just curious, in your opinion what makes it so hard to tune?

Thanks
Mark

[camcojb]

Originally Posted by supremeefi

Just curious, in your opinion what makes it so hard to tune?

Thanks
Mark

oh, I don't know.............. 5000 things running in the background, shut off the O2's and they still affect things, sportsmen vs pro key, hate that TAU deal (or whatever it's called). Every dealer in the Sacto area that I knew of has dropped them, as well as a dealer I know in the Bay Area.

I've tuned FAST, BS3, Gen VII, Holley 950 Commander, Factory GM LT1 with a prom burner, GM gas and diesel computers with HP Tuners and EFI Live, Ford Lightning computer with SCT Racer Pro, MEFI 4, and probably others I've forgotten.

By far the Gen VII was the most frustrating to get up and running really well. Actually I couldn't get things perfect for a friends Procharged small block so he paid two Accel dealers several hundred dollars each to tune it; both tunes were way worse when they finished with it, in fact one of them made 700 rwhp but you couldn't even drive the car back on the trailer to get it home. Had to load my tune back in (maybe I'm better than I think! ) After all that my buddy sold the Gen VII and bought the old FAST unit, immediately ran 100% better.

I am not dissing the system, it's more than capable. But I'll stand by my statement that it's much tougher than any other I've listed above to get tuned, at least for me. I'm just a hobbiest, not a pro, but I have a fair amount of tuning experience with n/a, twin turbo, blowers, diesels, etc. I know Accel had huge issues initially with EMIC's being awarded to people that should not have been able to get them, but there's still some pretty good tuners back then that gave up on that system.

Those two dealers I mentioned above dropped that system long ago, and these guys have been tuning for a long time. I've heard that the Accel has been "dumbed down" so maybe what you get now is not nearly as quirky as what I tuned. My experience was from when it first came out several years ago

[Rick Giles]

Dennis is not really local to me (5 hours away) but there is local guy named Steve Williams (Tuned By Frost) that is big with tuning GM LS boxes that has a nice shop and all the equipment including chassis dyno that I think is more than capable, I hope. Dennis said that he and I over the phone will be able to get the tune very close. Since it has some self learning capabilities it should be one of the easier ones to get tuned correctly. I plan on ordering the system tomorrow since they could get hard to come by. I'm probably 2-3 months from firing up the Chevelle. PS have you talked to Robert lately, the guy that I bought the car from?