Holley Terminator Questions
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Holley Terminator Questions I’m currently preparing to complete a Holley Terminator swap on my 1998 Camaro. In addition to that, I’ll be removing the factory PCM and LS1 and will be swapping in a Gen 3, 6.0 LQ4.
As I start this process several things came to mind. First, where are most people mounting the Holley Terminator PCM? Ive seen the glovebox being used however, I wanted to get some more photos and detailed information on what others have done. I will be reusing my heat and AC so I’ll need to work around that.
Second, I believe the rear EVAP solenoid / purge canister is controlled by the factory PCM. I assume the Holley system will no longer operate this. Seeing that this will be an issue, what do most people do in correcting this issue? Can you use an aftermarket charcoal canister in its place even though it’s not an electric unit? I’ve considered replacing the EVAP / Purge solenoid with the one below from Jegs.
Charcoal Canister
Any and all help with both of these things is greatly appreciated!
As I start this process several things came to mind. First, where are most people mounting the Holley Terminator PCM? Ive seen the glovebox being used however, I wanted to get some more photos and detailed information on what others have done. I will be reusing my heat and AC so I’ll need to work around that.
Second, I believe the rear EVAP solenoid / purge canister is controlled by the factory PCM. I assume the Holley system will no longer operate this. Seeing that this will be an issue, what do most people do in correcting this issue? Can you use an aftermarket charcoal canister in its place even though it’s not an electric unit? I’ve considered replacing the EVAP / Purge solenoid with the one below from Jegs.
Charcoal Canister
Any and all help with both of these things is greatly appreciated!
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
I'm not sure I see the point of installing an aftermarket EVAP system; with the stock PCM deleted the car will never pass an OBD scan emissions test in the first place, so you must either live in an area with no testing or the car is old enough to be exempted in your state - either way, emissions stuff is irrelevant if you're moving away from the factory PCM.
Thread Starter
Teching In
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I'm not sure I see the point of installing an aftermarket EVAP system; with the stock PCM deleted the car will never pass an OBD scan emissions test in the first place, so you must either live in an area with no testing or the car is old enough to be exempted in your state - either way, emissions stuff is irrelevant if you're moving away from the factory PCM.
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From: Schiller Park, ILL Member: #317
The car is old enough now for where I live I don’t have to worry about emissions. Mostly concerned with the ability to fill it up still with no issues and that a large amount of pressure doesn’t build during operation which I believe is what the EVAP purge solenoid does.
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EVAP is just for emissions compliance. The tank can simply be vented to the atmosphere. As mentioned above, the stock tank already has a vent system (vent solenoid near the tank defaults to open) that sends vapor to the canister; purge system is only active when the engine is running and vapors can be burned, but you can just delete the canister & purge system and the tank will still vent.
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
