EGR delete Need Help !!

Sinsics

Not-quite-so-new-guy
Jan 9, 2023
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Can I delete egr vaulve if I have rochester quadrojet with original emmisions?
 

Bonnewagon

Lost in the Labyrinth
Supporting Member
Sep 18, 2009
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You can. Just be aware that EGR dilutes the air/fuel mixture. That allows more timing. Without the EGR you will probably experience detonation. What year and engine? CCC engines cannot be adjusted for timing. Non-CCC can. You would likely be better off just fixing the EGR.
 
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Sinsics

Not-quite-so-new-guy
Jan 9, 2023
6
1
3
You can. Just be aware that EGR dilutes the air/fuel mixture. That allows more timing. Without the EGR you will probably experience detonation. What year and engine? CCC engines cannot be adjusted for timing. Non-CCC can. You would likely be better off just fixing the EGR.
It's a 1984 pontiac grand prix
 

Bonnewagon

Lost in the Labyrinth
Supporting Member
Sep 18, 2009
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So it has CCC. You are probably better off just fixing it. The CCC relies on everything working in concert. You could disable it, but only if you were converting it all to pre-CCC specification. What was the issue anyway?
 

Sinsics

Not-quite-so-new-guy
Jan 9, 2023
6
1
3
So it has CCC. You are probably better off just fixing it. The CCC relies on everything working in concert. You could disable it, but only if you were converting it all to pre-CCC specification. What was the issue anyway?
Nothing really wrong I just want to delete the most I can without it really affecting much but I guess I I did want to delete charcoal canister and egr I'd have to get an aftermarket carburator with I am just not anytime soon
 

Bonnewagon

Lost in the Labyrinth
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Sep 18, 2009
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If it ain't broke- don't fix it. Don't be like the Post Office. If it ain't broke- they'll fix it until it is. Every single part has a purpose and a reason for being there. Once you start removing things, the problems appear in their place. Do a search on here. Loads of threads where- 'I deleted [fill in the blank] and now it runs like crap. HELP!'
 
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Sinsics

Not-quite-so-new-guy
Jan 9, 2023
6
1
3
If it ain't broke- don't fix it. Don't be like the Post Office. If it ain't broke- they'll fix it until it is. Every single part has a purpose and a reason for being there. Once you start removing things, the problems appear in their place. Do a search on here. Loads of threads where- 'I deleted [fill in the blank] and now it runs like crap. HELP!'
Yeah I just wanna go for a minimal engine bay look and I'm basically there looks alot cleaner now but still couldn't hurt to ask thanks for the help though
 
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78Delta88

Royal Smart Person
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May 23, 2022
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Two things to try as just as a test. The caveat is removing or disabling an emission device can get you in trouble. Will they really come after an individual car owner? Probably not, but you never know.

Take kitchen foil, roll up in little 1/2 inch diameter balls and stuff in the EGR's manifold outlet hole. You will need 3 to 4 of those stuffed down the hole. Now, replace the EGR. To remove the foil balls, use the long pick with the 45 or 90 degree tip.

Next, pull the vacuum line going to the EGR and stick a 3/16 threaded set screw in the vacuum line and put it back on the EGR. To reset, just replace that section of vacuum line.

You have effectively blocked the inlet to the EGR and blocked the vacuum signal. From there drive it for a while and see if drivability improves. As long as the detonation (knock) sensor is working CCC should adjust timing to reduce this.

Just remember this is only for test, to temporarily rule out any issues with EGR operation. If you happen to forget and leave it as changed the CCC will still keep the car running closed loop, intake fuel charge will be better and you might experience more power per RPM range. So you might want to remember to re-hook everything as OEM, otherwise the engine could be more powerful and responsive.
 
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Clone TIE Pilot

Comic Book Super Hero
Aug 14, 2011
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Galaxy far far away
You can. Just be aware that EGR dilutes the air/fuel mixture. That allows more timing. Without the EGR you will probably experience detonation. What year and engine? CCC engines cannot be adjusted for timing. Non-CCC can. You would likely be better off just fixing the EGR.

The EGR also reduces throttling losses.
 
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L05edSS

Greasemonkey
Nov 29, 2022
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Can I delete egr vaulve if I have rochester quadrojet with original emmisions?
i'll say this when had my engine swapped had planned on keeping the ecm, ccc and all that mess i even bought a egr compliant cheap alum intake that came with block off plate. when called to check in 1 day they decided they were deleting it all and only reason i was hesitant was over the TC lockup that they didnt think of. no wont impact tc lockup but my point is if gonna do it go all the way which i did and maybe get high flow cats otherwise keep as is.
 
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