C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Accel GEN7 DFI systems

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Old May 19, 2004 | 11:55 AM
  #1  
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Default Accel GEN7 DFI systems

Anyone interested in getting a GEN7 DFI system? If so email me off list I maybe able to save you some $$$ :)
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Old May 19, 2004 | 12:10 PM
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Default Re: Accel GEN7 DFI systems (tjwong)

Did you finish EMIC school, Tom?? I was an EMIC way back in the day with the 6.0/6.32 stuff. I know you're a big fan of the OEM ECU's but you'll quickly find you have much more latitude with the stand-alones.
-Jeb
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Old May 19, 2004 | 12:25 PM
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Default Re: Accel GEN7 DFI systems (jburnett)

Jeb I was there in Cleveland for the EMIC classes and at the same time I went to the Mustang Dyno facility in Twinsburg about 30 miles from Cleveland. I am a big fan of OE stuff but for the more radical engines I have seen the light that GEN 7 is the way to go. Where FAST was far advanced over the old GEN 6 DFI, the new GEN 7 DFI is lightyear ahead of the FAST system. Not to say that a FAST system is bad, its saying the new GEN 7 system offers far more tunability than FAST giving a daily driver as near as OE drivability as an aftermarket system can. Of course that is with the proper tuning.

OE PCMs has their limits on what they can do. Granted these days with the new LS1 based PCMs that limit is pretty high especially with its complex control alogorithms. But that complexity can also hurt you because at present in the over 10000 lines of code in one of them PCMs, the LS1 edit boys has only touched a few of them.

By the way I have a extra copy of that GEN 6 tuning book if you need it, I can send you a copy. It was given to me when I took the GEN 7 class.
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Old May 19, 2004 | 10:39 PM
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Default Accel GEN7 DFI systems

:lol: you're about two years late.

when constant problems with the stock ecm kept plaguing my car, i went for the dfi. this hasn't exactly been a bed of roses either, but it's good. :cheers:
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Old May 19, 2004 | 11:44 PM
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Default Re: Accel GEN7 DFI systems (Jay 383)

Tom,

I have a gen 6 system. I could use a copy of that tuning manual. I may also be intreasted in the gen 7. Does it come with the wide band O2 ?
I now have a 434 and a 598 that's in need of some fuel injection.
-Dave
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Old May 19, 2004 | 11:53 PM
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Default Re: Accel GEN7 DFI systems (tjwong)

I have the Gen7 with the wide band O2 on my 408 `85 and might need some tuning help...can I email you?
Thanks,
Evan.
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Old May 19, 2004 | 11:57 PM
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Default Re: Accel GEN7 DFI systems (Da-Cajun)

Hi Dave,

The new GEN 7 stuff is light years ahead of the old Gen 6 systems. I was rather amazed at the adjustability and the new interface that Accel has made available. What Fast was as compared to the Gen 6 is now what Gen 7 as compared to Fast. There is no comparision, and I was an avid Fast user as well. Let me put it to you this way, I test drove a Gen 7 controlled 454 pick up truck that the Mr Gasket boys owned as a test mule. This truck was a beater to say the least yet it had a 454 that had a set of the latest (not available to you and me for at least 6 months) AFR rectangular port BBC heads, a HUGE Erson roller cam in it as well. I seen the dyno sheet on the engine and it made 560 RWHP! And mind you at an idle this engine had a very racy idle. When I drove this truck down the freeway, I lugged it down trying to get it to start surging or bucking like some heavily cammed engines would do at such a load.

Yet there was not a hint of cam surge, the engine was a bit lazy below 3000 RPM but man on man after that you better be hanging on cuz she was coming undone after that! That truck plainly HAULED some serious A**!!! But yet had great drivability and street manners, thanks to the Gen 7 tunability. The engine was equipped with their big block pro-ram set up and a 4bbl TB that flowed in the neighborhood of 1200 CFM. That manifold is much like an Edelbrock Victor single plane with injector bungs installed.

The WBO2 system is an option with the new system. But what is nice is that there are no firmware upgrades to be done to the ECU. It comes equipped to handle nitrous, sequential fire, wide band O2 and other ignition systems. Where the Fast has to be sent back to the factory to be upgraded the Gen 7 system is equipped that way from the factory. All that has to be done is to purchase the addition hardware and change a couple programming parameters in the ECU. Email me with your address and I will try to make a copy of the GEN 6 manual for you.
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Old May 20, 2004 | 12:26 AM
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Default Re: Accel GEN7 DFI systems (tjwong)

I was under the impression the FAST system was somewhat more user friendly to run over the Gen 7. But both just as good as the other. I am intrested in the comparision as I will be injecting the 434 I'm buying from Jeb. After that one is up a running then I do the 598. I sent you an email, so let me know what you can do.

-Dave
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Old May 20, 2004 | 12:36 AM
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Default Re: Accel GEN7 DFI systems (tjwong)

Tom,

You bring up some good points. Another plus for the ACCEL is the fact that it will natively control a GM TCC solenoid which is another thing that the FAST doesn't do.

There are some interesting points about FAST vs ACCEL, but from what I can figure out, FAST seems to have a much larger installed base. That is, while the ACCEL may pack more features than the current FAST, less people are using it vs those using FAST. This includes both GM and Ford applications. The FAST is very popular with the Turbo Buick crowd.

It will be interesting to see what the new FAST box will do as well as what is available with John Meaney's Big Stuff 3 ECUs (which there doesn't seem to be ANY info out there on this unit).

Ron
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Old May 20, 2004 | 09:56 AM
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Default Re: Accel GEN7 DFI systems (RonRed89)

I think the reason there are so many FAST systems out is because Accel was late in getting the G7 product released. Now that its out and improved I beleive that you will see a resurgence in popularity with the Accel name in EFI systems. I had a bad taste in my mouth after doing a few tunes on the earlier G6 systems, and I have to tell you that I was a bit hesitant with the G7 stuff but now after getting my hands on it earlier this year and going thru the EMIC class I can tell you that its a much more robust system than the FAST. Don't get me wrong the FAST system is a good system, and its great if you have a race dedicate application. Where the G7 really shines is that it can provide near OE quality drivability, not to mention the ease of tuning this system.
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Old May 20, 2004 | 11:45 AM
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Default Re: Accel GEN7 DFI systems (tjwong)

I think the reason there are so many FAST systems out is because Accel was late in getting the G7 product released. Now that its out and improved I beleive that you will see a resurgence in popularity with the Accel name in EFI systems. I had a bad taste in my mouth after doing a few tunes on the earlier G6 systems, and I have to tell you that I was a bit hesitant with the G7 stuff but now after getting my hands on it earlier this year and going thru the EMIC class I can tell you that its a much more robust system than the FAST. Don't get me wrong the FAST system is a good system, and its great if you have a race dedicate application. Where the G7 really shines is that it can provide near OE quality drivability, not to mention the ease of tuning this system.
I'll know more soon enough when I get the 89 back with the FAST system. It looks pretty easy from the C-COM demo that I downloaded. I will be able to say more about the driveability of the FAST on my setup.

Outside of interface, what seems to make this easier to tune with respect to other systems that were previously available. I am interested to hear your thoughts as you're one of the few people who has tuned on all of them.

The GEN 7 software is years ahead of the FAST in terms of GUI. The FAST was years ahead in the software space in comparison to the GEN6 as you have already mentioned.

Do you know anything about the BigStuff3? I wonder if that will be the GENN7's competition on a feature-for-feature basis.

Ron
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