LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

LT1 evap question

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Old 01-19-2006, 12:15 AM
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Car: 91' Pontiac Firebird
Engine: LT1
Transmission: 4L60E
LT1 evap question

I searched and couldn't really fingd teh answer I was looking for. I'm planning on deleting my stock evap can, capping the line, and venting the cap. What do I do about the LT1 evap solenoid? Can I take it off completely? Can I cap the line at the TB, but leave the solenoid hooked up so the computer thinks it's still there? Can I cap the line from the solenoid to the can, but leave the solenoid to TB line? Or can the S to C line just be open to atmosphere? How would any of this affect anything as far as sucking in air when the solenoid opens? I'll have it programmed out when I have my PCM flashed, but thats a few months off still, so what can I do in the mean time? Thanks for the info.
Old 01-20-2006, 09:43 PM
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I asked a similar question not too long ago about just the canistor.

https://www.thirdgen.org/techbb2/sho...hreadid=339444

I'm going to try to cap mine directly at the tb without the evap connected. Right now i just have the line out capped.

I'm also wondering if i should get a vented gas cap.

I think you could at least cap both lines in the meantime.
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