Gts Link Ecu

[Mid_Nite_R33]

Hey,

Was gettin my link ecu tuned today on an R33 gtst series 2 and the tuner had issues of ithe car missing on all sorts of boost levels...

Its got the right plugs in it, fuel pressure is there, just wondering if anyone else had issues or if know whats causing it.

thanks!

[The Mafia]

coilpacks?

List your mods? FOr all when know you could be running a 400hp shot of NOS, and a jet engine strapped onto the boot?

[Mid_Nite_R33]

sorry,

FMIC, 3" turboback, sheilded pod, turbosmart t piece set to 12 psi, plugs chosen by the tuner gapped to 0.6mm

[Mid_Nite_R33]

the car has run 10 psi on stock computer and had no problems, this missing that the tuner had was sometimes at 4 psi sometimes at 10 (inconsistent), he thinks it may be the fact that R33's series 2 do not have an igniter on them compared to series 1.

[The Mafia]

yeah man, sounds like the coilpacks

the extra boost is putting out the spark cause the coilpacks are shagged..

[dan.1337]

Out of curiosity, which tuner did u take it to?

u can pm it to me if u don't want it on the forums. i'm also having my gtsLink tuned right now and have yet to see the results.

[Mid_Nite_R33]

yeah man, sounds like the coilpacks

the extra boost is putting out the spark cause the coilpacks are shagged..

I've ran 10 psi on stock ecu without missing with 0.8mm plugs

[R31Nismoid]

plugs chosen by the tuner gapped to 0.6mm

Thats the problem right there.

If you have to gap the plugs any further than .8mm, its a dead give away you have a problem with the ignition

And that usually means (in order of occurence, first being most common)

* One or more coil packs is stuffed

* Wrong plugs are being used

* AFM might need a clean

* Faulty connectors/loom somewhere causing a weak spark to be produced

* CAS not working correctly.

[Mid_Nite_R33]

dont think the link uses AFM,

so to me it sounds like it may be the coilpacks however i ran 10 psi before with no problems or the fact that series 2 doesnt have the igniter near the coilpack plug but inbuild to the stock ecu maybe?

[R31Nismoid]

Well if it doesnt use the AFM, just pretend that point isnt there and read to the next one.

Mute point.

Yes, the increase boost (as already stated) is causing the spark to blow out.

1psi can have that effect if your on the limit already. It could also be the coils have now deteriorated even more.

Surely your tuner knows all this? Or are they just guessing?

[Mid_Nite_R33]

Well if it doesnt use the AFM, just pretend that point isnt there and read to the next one.

Mute point.

Yes, the increase boost (as already stated) is causing the spark to blow out.

1psi can have that effect if your on the limit already. It could also be the coils have now deteriorated even more.

Surely your tuner knows all this? Or are they just guessing?

what 1 psi are you reffering to? this missing was inconsistent happened at 4 psi, 10 psi, sometimes the can ran smooth, the next run it would miss as soon as it hit boost.

Doubt the coil have deteriorated even more cause i ran 10psi for no more than 3 weeks with the stock ecu...

what do you think about the igniter difference between S1 and S2?

Edited May 17, 2007 by Mid_Nite_R33

[R31Nismoid]

Dude, ive given you the advice (as have others), if you wanna argue/doubt/whatever. So be it.

Go pay someone lots of money and dont bother with forum advice

[Mid_Nite_R33]

Dude, ive given you the advice (as have others), if you wanna argue/doubt/whatever. So be it.

Go pay someone lots of money and dont bother with forum advice

not trying to argue anything dude, just trying to work out what the problem is given what people say on here and with what i know about my car.

[WPN-O33]

My car has run a Link ECU for a few years now without any dramas, i'd say its the coilpacks....

[Lithium]

not trying to argue anything dude, just trying to work out what the problem is given what people say on here and with what i know about my car.

He is right but there is some stuff missing from the story which is worth knowing. Link ECUs only have 4 coil drivers, so the way that it deals with your 6 coils (I had this issue too) is it fires 2 at a time - much like you do with wasted spark. One will be the one which is actually due for an ignition stroke, the other will be going into exhaust stroke. If your coils are getting "tired" then even if it was all working fine before putting the Link in, when they have to go double time due to the Links way of getting around of too few coil drivers they will show their weakness.

Only way around it is new coil packs or the more logical way which would be to convert to wasted spark, seeing as thats how the ECU is treating them anyway.

[N I B]

Waste spark ECUs will run into ignition problems at lower boost than sequential fire and S2 coils are worse than S1.