Supercharger and EGR
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Supercharger and EGR How tight is the EGR valve?
Is it possible that under boost some air goes through the EGR system?
I'm not worried about the boost lost, but my wideband is installed in the passanges exhaust side (right befor ethe cat) and if the EGR has a leak my AFR measurement will be wrong
Any idea?
Thanks - Stefano
Is it possible that under boost some air goes through the EGR system?
I'm not worried about the boost lost, but my wideband is installed in the passanges exhaust side (right befor ethe cat) and if the EGR has a leak my AFR measurement will be wrong
Any idea?
Thanks - Stefano
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What is the disadvance to block it off? Fuel consumption while cruising?
While the EGR is open the timing is slightly advanced (see the attached pic).
I can't tune it out directly because I have LS1Edit, I have to reduce timing in that area in the main timing table.
Is that a good idea?
Do I really have to worry?
While the EGR is open the timing is slightly advanced (see the attached pic).
I can't tune it out directly because I have LS1Edit, I have to reduce timing in that area in the main timing table.
Is that a good idea?
Do I really have to worry?
EGR should be closed at WOT, you will not make boost at part throttle where the EGR is pulling spark in that table.
I had the EGR on my old z28 with a blower and all the other emissions junk (pre LS1edit days) and never had any problems..
I had the EGR on my old z28 with a blower and all the other emissions junk (pre LS1edit days) and never had any problems..
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Originally Posted by kp
EGR should be closed at WOT, you will not make boost at part throttle where the EGR is pulling spark in that table.
I had the EGR on my old z28 with a blower and all the other emissions junk (pre LS1edit days) and never had any problems..
I had the EGR on my old z28 with a blower and all the other emissions junk (pre LS1edit days) and never had any problems..
If only a little air goes through the wideband will tell me crap
Originally Posted by tici
100% no leaks?
If only a little air goes through the wideband will tell me crap
If only a little air goes through the wideband will tell me crap
If you are that paranoid just get rid of it, block it off and turn it off in LS1edit, or put the wideband in the other side.
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Yessss! I'm paranoid. Last night I wasn't able to sleep and all this sort of BS came in my mind 
Something interesting in LS1Edit: if you turn off the EGR you'll have a code.
Like if the program won't know that if it's off the pintle won't be able to move
Do you think that turning it off will eliminate the additional timing advance?
Mhh... OK. I'll have to make a scan. And then log for AFR with the EGR active and then blocked off.
...always the complicated way to learn... try - try - try
Thanks anyway for your advices!
Something interesting in LS1Edit: if you turn off the EGR you'll have a code.
Like if the program won't know that if it's off the pintle won't be able to move
Do you think that turning it off will eliminate the additional timing advance?
Mhh... OK. I'll have to make a scan. And then log for AFR with the EGR active and then blocked off.
...always the complicated way to learn... try - try - try
Thanks anyway for your advices!
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I'm pretty sure when you turn it off in LS1edit it no longer works, not sure about the extra advance but I assume that wont do anything with it off either. Just zero out that table, turn it off, unplug it, and turn off the MIL/tests for EGR.
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