exhaust cam retarded one tooth and stutter box is uncontrolable!!!

[Slippi84]

You guys have this backwards or atleast it appears that way. Retarding the exhaust cam is comonly done to make yoru car spool faster thus decreasing bottom end power. The thing is it's not as comonly done on aftermarket cams because they have already been tweaked to the point where best spool is acheived anyway especialy with the fp2x's whose fame to claim is no loss of low end power like fp2's and even more top end. So what you did by retarding your exhaust cam one tooth(which by the way people usualy don't go a whole tooth because it's to drastic a change) you messed up the chemisrty of the cams. To be honest I would set it back and leave it you might spool slower but I think you'll actually run faster.

 

[nanokpsi]

and yes my anti lag is set up through dsm link

Then you can build as much boost you want with that turbo. That is working like it is supposed to. The bogging out could be a different casue.

 

[andymoraitis]

You guys have this backwards or atleast it appears that way. Retarding the exhaust cam is comonly done to make yoru car spool faster thus decreasing bottom end power.

I think you mean that it increases bottom end power. I've always understood the same thing. Advancing the intake and retarding the exhaust lowers the spool time and shifts the torque peak down while limiting top end power. If I'm incorrect in my assumption, please let me know since I've been known to be wrong before.

 

[Slippi84]

I think you mean that it increases bottom end power. I've always understood the same thing. Advancing the intake and retarding the exhaust lowers the spool time and shifts the torque peak down while limiting top end power. If I'm incorrect in my assumption, please let me know since I've been known to be wrong before.

Nope your right your saying tamatoo i'm saying tamatoo(kinda hard without actualy saying it for that to make sense ). The one thing is it does not increase low end power it just moves the powerband down which is slightly diffrent but tech does the same thing. Pretty much a cam will have a certain lift and duration which will put your powerband at a specific and unique point in your rpm range. By doing this mod your going well I like where it is but I want it to shift down a little bit. In my opinion it's great if you get a set of cams and they don't do what you thought they would. Like say you bought a set of fp3's and they ended up increasing lag to a point that you weren't satisfied with but you like the top end they give you so you sacraifse some of that top end and either retard the exhaust or advance the intake up to a tooth and you spool faster yet because you shifted your powerband you lose some of that up top power where it was before. Only case I would think this woul dmake sense doing with aftermarket cams is if your shifting at stock 7.5k rev limiter or abouts with aftermarket cams because your afraid of reving to high yet your car is pulling till next week. So you figure why have it setup where your powerband isn't optimized during the most comon operating area and you retard the exhaust cam shift the powerband down still pull till your 7.5k yet spool 2-300rpms sooner.

 

[Coup D E'Tat]

I've heard both ways on the spool issue, which is why I asked for his personal experience.

 

[andymoraitis]

That's exactly why I'm going to pick up a set of adjustable gears. I've had spool issues on the 2.0 and the 2.3. In the absence of boost leaks, it's my last option so that I can see full spool before 4000 RPM. If I revved to the moon, I wouldn't care but shifting at a paltry 7000 RPM means I need to get the boost online as qucikly as possible.

Tomato Tomatto Potato Potatto!

 

[RacethisTSI]

weird...i set the timing back to normal and it acually seams to spool faster now go figure. like 300 rpm sooner, full boost by 4500. well we'll see what buschur says when its on the dyno.

 

[andymoraitis]

If base timing is advanced, it'll spool more slowly since there's less heat being generated. I'm not sure which way you went, but if you retarted your timing back to stock levels, that certainly would help spool. Going lower may not help much though since taking more timing away might make more heat, but will make the motor feel sluggish.

 

[Slippi84]

If base timing is advanced, it'll spool more slowly since there's less heat being generated. I'm not sure which way you went, but if you retarted your timing back to stock levels, that certainly would help spool. Going lower may not help much though since taking more timing away might make more heat, but will make the motor feel sluggish.

When he said back he didn't mean back down like he had advanced it he meant back to where it was from it's retarded spot. Like I said when you do this trick with aftermarket cams most time you mess up the chemistry these companys spent so much R&D developing.

 

[RacethisTSI]

thanks for all the help guys, i really apreiate it...