A/F gauge/EGR

[RadRacer]

Would a normal A/F gauge tapped into my O2 sensor be completely worthless? I've heard yes, but just double checking. Daily, H/C car with slight possibility of spray in the future. I just want to try and keep an eye on things while I'm driving. Another thing, I want to !EGR. Just to get it out of the way, I know there's no real gains to it. If you do that, you have to run premium fuel until you can get it tuned, which I will, but I just want to make sure I'm not pushing it too much; GT2 cam, valve job, P&P intakes, bolt-ons, TR6 plugs. Would I be fine, or should I leave it on for now? I'd prefer to leave it off, since I'm reassembling the car now and don't want to worry about it at all :P

[Crazed98Camaro]

Re: A/F gauge/EGR

A regular A/F guage tapped into your current (stock) 02's would be a light show. Nothing useful there.
You would need to buy a wideband 02 sensor (stock are narrowband), and those run you a pretty penny (upwards of $200) if you want a A/F guage to be worth anything more than a filler guage.

Edit: A/F to a stock 02 will look like this: http://www.youtube.com/watch?v=npNeb...eature=related

[bigbrian442]

Re: A/F gauge/EGR

Looks like your already ready for a tune with the other mods. Deleting the EGR would only affect part throttle cruising. It shouldn't be open at WOT so Xing it should be OK with premium fuel but it will effect fuel milage.

[RadRacer]

Re: A/F gauge/EGR

OK. I have a buddy about 2hrs north of me who said he'd let me use HP Tuners on my car if I buy the credits. I'm going up there one weekend once I get her running again. Do you think I'd be fine DD'n the car with no EGR on stock tune? And how bad will it affect fuel mileage?

[bigbrian442]

Re: A/F gauge/EGR

1 or 2 MPG at most, Having the EGR lets the PCM run more timing at part throttle cruse. The cam will effect you more.

[97rs4life]

Re: A/F gauge/EGR

yea a/f gauge on the narrowband 02s is a lovely light show at best. lol.

get a good wideband if you want to monitor your ratio