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

Ignition Module - would it cause breakup at high revs?

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Old Aug 1, 2004 | 07:19 AM
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Default Ignition Module - would it cause breakup at high revs?

The guy who installed my DFI said he had to put two in because the car would break up at 6K on the dyno. I don't trust anything that guy said but now the car is doing the same thing. Is it reasonable to suspect the ignition module? If so, what would cause this to happen?
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Old Aug 1, 2004 | 09:22 AM
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I don't know the answer to your question but why are you letting someone you don't trust work on your car?
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Old Aug 1, 2004 | 08:08 PM
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I should have said the "guy who used to work on it".
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Old Aug 1, 2004 | 10:26 PM
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I had a intermittent miss last week and thought the same thing......so I researched here and third gen and the general concensus was they ether work or they don't.completely dead....then I started looking else where and found a burnt plug boot.........msd plug boots suck, they burn were the stockers didn't......hummmmmm..... anyway look else were don't for get the easy stuff and good luck
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Old Aug 2, 2004 | 03:17 PM
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Originally Posted by jerkyboy
The guy who installed my DFI said he had to put two in because the car would break up at 6K on the dyno. I don't trust anything that guy said but now the car is doing the same thing. Is it reasonable to suspect the ignition module? If so, what would cause this to happen?
I had the same thing happen to my 92. It would pop and bang out at around 6k. I added an MSD 6AL and fixed it instantly. You will just need the harness to connect it to your factory harness.
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Old Aug 2, 2004 | 03:55 PM
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i use aftermarket moduals in my HEI's because the dwell time falls bad
in stock moduals
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Old Aug 2, 2004 | 04:29 PM
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yikes. Hate to have to spend another $200+ for MSD etc.. Are you saying that the aftermarket modules (accel etc..) will provide more spark up high? I just put all new wires on it. I am going to check the plugs tonight. Other than that, I am at a loss.
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