The ideal timing advance is 19°
True...true...if your running stock cams....CowboyDren said:Don't bother. If you want real-world opinions talk to people who've done it, not some monkey, We bump timing all the time, with no complaints and hefty gains if it's done properly. Automatic or not, it's all the same.
13*-15* is what the S3 cams like with the stock ECU. I was getting horrible performance before I retarded the timing back when I first installed the S3 cams....I cant say what the JWT ECU preferrs when it comes to timing, probably the same...JustinP10 said:That's not always true. A lot of it depends on your ECU (stock or JWT) and cams. With stock cams and stock ECU that seems to be the best for most people. Other cam setups like different settings and w/ the JWT ECU the ideal setting is most always 15 degrees (unless otherwise stated on the ECU). Don't S3's and a stock ECU like down around 13 degrees?
17*-19* is a safe bet, and it is highly recomended to run premium fuel when you advance the timing. S3 cams, I repeat, HATE advanced timing....it is very noticable...CowboyDren said:Stock is assumed in this case, therefor 19* is the recommendation, unless you have a dynamometer to prove otherwise. JWT's ECU doesn't like too much base ignition advance, so that should be dialed back to 15* upon installation. I don't know about just the cams.
17*-19* is a safe bet, and it is highly recomended to run premium fuel when you advance the timing. S3 cams, I repeat, HATE advanced timing....it is very noticable...
just my two cents...
Why is that? JWT doesn't even recommend the springs until you get S4's. The S3's were designed to be run with stock valve springs and retainers. Why upgrade? If you're gonna do that you might as well buy the S4's that'll take advantage of the better springs and retainers (albeit a little one). The way I look at it is that if you're going to get the springs, reatainers and ECU w/ the cams, you might as well buy a cam that'll really take advantage of those upgrades (C series cams).G-loads said:[B
Also, I recommend to get the JWT valve springs with that when you purchase the S3 cams. Just to be on the safe side. [/B]