No boost built off DSMLink V3 2 step/launch control

[jjrock5]

I went to the track this past weekend and tried to use for the first time the "launch control/2 step" feature on DSMLink V3.

I noticed that I reved to 4500 RPMs (which is what I had Link set at) and it wouldn't build ANY boost. My boost gauge would go from vacuum to 0 but NO boost. My setup includes PR FMIC, FP Green, SMIM, Comp 101200 cams, 255, FIC 850s, stock 7 bolt, stock head and all the other supporting jazz.

Does the fact that the FP Green is a "later spooling" turbo affect that it doesn't build boost?

Or is it as simple as me having a boost leak and that can be the only reason?

I did a blt and showed no boost leaks but maybe I missed some VERY small ones, if that affects it in a large way.

Thanks for any input.

 

[JusMX141]

You should be seeing something....have you tried antilag yet to see if that changes anything?

 

[90gsx_luis]

up the anti lag !!

 

[jjrock5]

I will sound like a really big race newb (which I am) but I haven't touched the antilag at all on Link.

All I did was change the limiter to 4500 and hit "Save to ECU" So I'm assuming this HAS to be my issue.

I guess I need to do more research on the antilag feature of Link.

Anybody have any good links?

 

[LiquidX]

ECMTuning User Support Forums

 

[jrohner]

IMO 4500rpms is probably just too low for that size of a turbo, especially when your not using ignition retard.

 

[jjrock5]

Thanks for the link. I never knew ignition retard/antilag had anything to do with 2 step.... wow...

 

[Demon33]

I went to the track this past weekend and tried to use for the first time the "launch control/2 step" feature on DSMLink V3.

I noticed that I reved to 4500 RPMs (which is what I had Link set at) and it wouldn't build ANY boost. My boost gauge would go from vacuum to 0 but NO boost. My setup includes PR FMIC, FP Green, SMIM, Comp 101200 cams, 255, FIC 850s, stock 7 bolt, stock head and all the other supporting jazz.

Does the fact that the FP Green is a "later spooling" turbo affect that it doesn't build boost?

Or is it as simple as me having a boost leak and that can be the only reason?

I did a blt and showed no boost leaks but maybe I missed some VERY small ones, if that affects it in a large way.

Thanks for any input.

Try increasing your throttle position (ie. floor it if you're not already) to build more boost. I don't really use my launch control all that much because my car is my DD and I need the stock tranny to last, but if I remember correctly, you have to have a high enough throttle position to build boost at the line. Give it a try and if it doesn't work, try increasing the launch rev limit to get a little more aggressive with that big turbo.

 

[jjrock5]

Try increasing your throttle position (ie. floor it if you're not already) to build more boost. I don't really use my launch control all that much because my car is my DD and I need the stock tranny to last, but if I remember correctly, you have to have a high enough throttle position to build boost at the line. Give it a try and if it doesn't work, try increasing the launch rev limit to get a little more aggressive with that big turbo.

Ok thanks I'll try that.

I believe sometimes I reved to 4500 only at part throttle and sometimes at WOT with no change but I'll try it again anyway.

 

[livedsm4g63]

Mines set at 5500 and i build 20psi on a 16g. Did it boost fine while you were going down the track?

 

[jjrock5]

Oh yea I hit ~24 lbs with no problem. Did it spool up fine at any lesser RPMs? Are you integrating antilag?

 

[TSIMonsteR]

internally gated?

 

[Yngvar]

Oh yea I hit ~24 lbs with no problem. Did it spool up fine at any lesser RPMs? Are you integrating antilag?

you can't compare your turbo to a 16g. I think something has to be wrong with your set up because with my car that has a 57 trim on it will build 3 or 4 pounds at 4500 and I only have a 10 pound spring in my waste gate. Do you have any pre turbo exhaust leaks because my car did the same thing when my gasket was leaking

 

[jjrock5]

External gate off the o2 and I don't think it has preturbo leaks. Everything seems pretty tight.