advanced timing?

sd88supra · 04-25-2008, 08:17 AM

A couple months ago when I failed emissions I looked at the report and noticed the timing was off... too advanced. Well, it was set at 15? so I put it back to 10? and fixed the EGR (which was a pain in the ass) and passed emissions.

These were the effects: loss of power and crappier gas mileage. So it put the timing back to 15?. Got power back, only I've driven about 40 miles since I filled 'er up so I can't say anything about gas mileage improvement yet. My question is, is this ok? There's no knocking or pinging, and from what I've seen a lot of guys advanced their timing a little. I haven't been able to drive somewhere free enough to hit 80+ mph to see if my high end torque was reduced (which I suppose it was).

If I got lower mpg at 10? it seems like there was too much drag on the car from the lack of low end torque.

04-25-2008, 08:17 AM	#1
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	advanced timing? A couple months ago when I failed emissions I looked at the report and noticed the timing was off... too advanced. Well, it was set at 15? so I put it back to 10? and fixed the EGR (which was a pain in the ass) and passed emissions. These were the effects: loss of power and crappier gas mileage. So it put the timing back to 15?. Got power back, only I've driven about 40 miles since I filled 'er up so I can't say anything about gas mileage improvement yet. My question is, is this ok? There's no knocking or pinging, and from what I've seen a lot of guys advanced their timing a little. I haven't been able to drive somewhere free enough to hit 80+ mph to see if my high end torque was reduced (which I suppose it was). If I got lower mpg at 10? it seems like there was too much drag on the car from the lack of low end torque. __________________ -1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage. -1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car. -1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.