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

accel gen 7

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Old Apr 2, 2008 | 04:27 PM
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lead foot 85 vet's Avatar
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Default accel gen 7

What all do I need for a turn key accel gen 7 installation?.........what extra's ? if any.
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Old Apr 2, 2008 | 09:40 PM
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Originally Posted by lead foot 85 vet
What all do I need for a turn key accel gen 7 installation?.........what extra's ? if any.
This is what I think you'll need:
LT1 Accel Gen VII DFI
Fast Track wiring harness splice

Things that would be nice to have:
Wideband upgrade
Knock sensor upgrade
Accell Dual Sync Distributor
Accell Distributor wiring harness

And, you'll need a laptop to tune it.
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Old Apr 2, 2008 | 09:43 PM
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thanks...........why the new distributor
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Old Apr 2, 2008 | 11:13 PM
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Originally Posted by lead foot 85 vet
thanks...........why the new distributor
Three reasons:
1.) gives you full sequential fueling
2.) avoid optispark maintenance issues
3.) easier to tune (what I've been told)
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Old Apr 3, 2008 | 03:49 PM
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lead foot 85 vet's Avatar
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From: providence ut
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no optispark here

Qusetions
can you set a fuel ratio.....like 12 to 1 and have the gen 7 keep it there under boost or do you have to imput it like the gen 6?

do you know what is differant from the gen 6 (which I have now) to the gen 7?

I have an 85 and with the gen 6 I just had a diifferant ecm plug made to use the current harness.........is that possible with the gen 7?
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Old Apr 3, 2008 | 04:06 PM
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I'm sure you can reuse the stock harness if you don't want any of the ECU functions. I'm not sure how the dashboard runs, but if you're doing it with the gen6 then the 7 shouldn't be a problem.

You can set it to attempt to follow a set AFR, however, you can't just set that, you still need to set the VE tables. The correction loop takes a bit to catch up so you don't get instant changes. If you're AFR spikes the correction will have a hard time keeping up, but if its a steady state offset then it can compensate nicely.

I hope that helped.
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Old Apr 3, 2008 | 04:36 PM
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With the gen 6 you input fuel pressure, hp, and injector size, then the dfi sets a base fuel table based on that...........from there the gen 7 would recalabrate the table based on desired afr as a base table change or on the fly every time (not changing the base fuel table)?.............sorry about the dumb a$$ questions........as of now I use a fmu with the base fuel table, so as I need more fuel I just crank up the pressure........I've bought some bigger injectors and want to get rid of the fmu but do not have a tunner in town,,,,,,,,,,I was hoping the gen 7 would do the boost afr increase for me......as I am bearly capable of tunning the gen 6............thanks for the help.
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