Sully

Will a Revo SPS3 work for a MY2000 FWD TT, engine code ATC?

TTschwing

Revo flashed...why not?

Sully

This is a real grey area for me. As I understand it, my car does not have variable valve timing, so it seems like having an SPS3(which claims to advance timing) will only work with VVT adaptable cars. Does your stage 3 achieve the same thing that an SPS device would? I understand timing/fuel to a degree, but am uncertain on the comparison between your setup and a SPS3 device. What I am trying to accomplish is the ability to utilize race fuel. I was always under the impression that adding higher octance fuel will give me more horsepower without having to adjust timing and compression.

TT_Nuge

VVT allows the timing to change depending on certain criteria while it's running. But using an SPS you are changing the timing on a whole over the entire range. You will need an SPS3 or SPS2 (new style) in order to take advantage of race gas, that's the only way to do it other than possibly messing around with Lemmiwinks but you won't get a lot of advice on that.

Trent

TTschwing

SPS3 affected timing is strictly ignition advance. It has Nothing to do with the cams. VVT is just for emmisions anyway. it has nothing to do with performance like the honda V-Tec does..

On your fuel situation, unless you have programming to take advantage of 100+ octane I wouldn't waste my time and money. An SPS3 will change things within a relatively small window and I think they have a "race" fuel setting . Your computer does this automatically to some extent BTW, by advancing timing up to the point of Knock, then retarding a bit ( within a relatively small range). High octane fuel also burns slower, so unless the programming exists to deal with it, your car may not run any better. Buy a tank and see what happens. you may or may not be pleased with the results. I would concentrate on some cooling mods too. The cooler the temps read at the manifold the greater timing advance and power you will get. This makes a huge difference (ie: FMIC)

JohnLZ7W

VVT is valve timing, chips (and SPS3) change ignition timing

TT_Nuge

I knew they were different but didn't know how best to explain it. Thanks!

Sully

frankly, I am not sure about dumping too much money into my car, given the situation that may be at hand with purchasing a MKV GTI, or at very least a new Quattro 225TT and thusly with mods getting near 300HP much more economically than a Stage 3 APR kit. So I guess for about $1,500 in Mods (FMIC, spacer, SPS3, boost gauge, boost machine, ****.etc)I could be pretty happy.