LS1->LS6 engine swap on 99 Z28.. questions, esp about emissions and EGR
04-26-2006, 11:49 AM
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Staging Lane
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LS1->LS6 engine swap on 99 Z28.. questions, esp about emissions and EGR Since my engine is more or less toast, I'm looking to get it replaced with a LS6 service engine from GM performance parts and start new with a fresh engine.
Anyways, I was wondering, am I going to run into any emissions testng problems? Off hte top of my head, the EGR isn't really used on the new LS6's, compared to my 99 LS1.. Is it a simple thing to "delete" EGR and still have it pass OBDII emisison checks (computer readout check)?
Any other wierd things using a 99 LS1 PCM to control a LS6?
Was wondering if I need to also replace my injectors with slighlty bigger ones? I know the 99 LS1's used smaller injectors.. did GM switch back over to the slightly bigger ones?
Anyways, I was wondering, am I going to run into any emissions testng problems? Off hte top of my head, the EGR isn't really used on the new LS6's, compared to my 99 LS1.. Is it a simple thing to "delete" EGR and still have it pass OBDII emisison checks (computer readout check)?
Any other wierd things using a 99 LS1 PCM to control a LS6?
Was wondering if I need to also replace my injectors with slighlty bigger ones? I know the 99 LS1's used smaller injectors.. did GM switch back over to the slightly bigger ones?
04-26-2006, 12:37 PM
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You shouldnt have any problems i put a 04 Z06 engine in my 98z i have no problems at all with the computer. I eliminated the EGR AC and AIR pump for emissions still using my 98 ls1 injectors this may i might be taking it to a shop to get the car tuned. Also i gotta take it to emissions but its done by the computer here in CT so its not a tailpipe test. I just got get the codes fixed. And i dont think if it where a tailpipe test there wouldnt be much of a diffrence between ls1 and a ls6.
04-26-2006, 01:03 PM
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Originally Posted by 98z28chevy
You shouldnt have any problems i put a 04 Z06 engine in my 98z i have no problems at all with the computer. I eliminated the EGR AC and AIR pump for emissions still using my 98 ls1 injectors this may i might be taking it to a shop to get the car tuned. Also i gotta take it to emissions but its done by the computer here in CT so its not a tailpipe test. I just got get the codes fixed. And i dont think if it where a tailpipe test there wouldnt be much of a diffrence between ls1 and a ls6.
Oregon does it by computers too. They are a pain.. Our beater Tracker car had an error code about the neutral safety switch , nothing about emissions, but they wouldn't pass it cause it was a code set off. blah.
04-27-2006, 04:12 PM
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Originally Posted by ynneK
Cool. What exactly is "getting the codes fixed?" Do you goto a shop that can permently delete them? Or do you have a tool that can delete them yourself?
Oregon does it by computers too. They are a pain.. Our beater Tracker car had an error code about the neutral safety switch , nothing about emissions, but they wouldn't pass it cause it was a code set off. blah.
Oregon does it by computers too. They are a pain.. Our beater Tracker car had an error code about the neutral safety switch , nothing about emissions, but they wouldn't pass it cause it was a code set off. blah.
Check out HPtuners.com. You're able to turn off, and adjust the codes you feel your car needs to display, monitor, and report problems/set the check engine light. For instance, on my old GTP, I installed an air-water intercooler under the stock blower, and removed the entire EGR system for the reason that I didn't want Carbon dirtying up my $700 IC core. Read the PCM, turned off all of the codes for the EGR system, and reflashed the PCM. Same thing for the o2 behind where the cat was. As far as my car's PCM knew, there wasn't an EGR system anymore, nor was there a cat.
It just went in for OBDII Emissions Testing last week with the new owner, and passed with no problem. Sure, it stunk like 100 octane, but there were no codes.
