VVT-I TT engines.... problems/limitations?

[Jim_1979]

ANy isuues with the TT VVT-I engines?

 

I remember reading about some tuning issues/limitations or something. I can't remember to be exact.

 

Anyone got any info? Compared with a non VVT-I engine.

[Alex]

Tuning issues are only that with more sophisticated electronics you need to spend your money wisely on the ECU/mapping.

[johnny g]

I think the VVTi runs into a wall @ 520ish bhp IIRC - you need to start looking at cams etc, but should be fine up to that point.

 

You need an ECU which can handle the VVTi; AEM does it, but only open loop. Solaris does it - and in closed loop, so I'd choose that. It's what I'm going for.

 

I'm sure Ryan can advise better

[Alex]

I think the VVTi runs into a wall @ 520ish bhp IIRC - you need to start looking at cams etc, but should be fine up to that point.

 

You need an ECU which can handle the VVTi; AEM does it, but only open loop. Solaris does it - and in closed loop, so I'd choose that. It's what I'm going for.

 

I'm sure Ryan can advise better

 

I don't agree, there is not such limitation on the cams. The cam duration will be *roughly* the same as the non vvti and people have managed much higher power levels with them.