Hey guys, had her dyno'd the other day,

Made about 20hp down on what I'd have expected, running stage 1 with a pd150 bolted up.

Seems odd the path the power curve follows, flat after the initial peak, it's always felt a bit flat/gutless after the initial surge of torque.

I don't THINK there's a boost leak present, it's got pretty much a brand new set of pipes fitted when the turbo was replaced in November. Although I guess the IC itself could be leaking boost, I can't hear any obvious leaking noise.

I will get on with vcds logs this weekend, just wondering if anyone else has had similar issues?

Edited 1 February, 201313 yr by JoshH

Hmm, Yes that torque curve should cross over the power curve from what ive seen before. For such a straight torque line after the initial boost, i'd assume its the turbo? Assuming there are no leaks etc. Probably stop screw setting/ actuator rod? I experienced a very similar thing when i had my new turbo bolted on. Was the turbo fitted after the map?

Blue line is HP dude, logs definitely needed to narrow this down!

Bugger was in Brackla Estate Wednesday, If I knew you were there would have popped in to say Hello.

Back on topic that is low but at least both hp and torque are nice smooth curves.

Didn't Craig have any ideas what was wrong ?

Karl

Bugger was in Brackla Estate Wednesday, If I knew you were there would have popped in to say Hello.

Back on topic that is low but at least both hp and torque are nice smooth curves.

Didn't Craig have any ideas what was wrong ?

Karl

Didnt even know you were based in Wales dude!

Yeah he said its down on power but needed time to investigate further, I wasn't there myself, just left it there while in work as I'm only working in Bridgend

Based in Bridgend centre but live by Port Talbot. One of my clients is by Got Boost.

Surprised you haven't seen me driving around.

Yeah excluding the numbers is a nice wide powerband, nice smooth reduction in torque.

But super laggy. A VB on a stock pd130 map comes on boost at around 2200rpm.

Has it always been like this do you know? Might need actuator adjustment?

It's been like it since I've owned it John, only actually been driving it a few weeks as it's been off the road for coilovers etc.

Only thing I did have an oh **** moment was the lad before had the cambelt changed in November..this wouldnt be a slightly off timing issue?

There's no mpg issues either, getting 55-58mpg on my commute to and from work.

The turbo was brand new in November so possibly it could be an actuator issue or something like that, will boost logs give a clue as to something like that?

Yeah duty cycle on group 11 could show it. At 4k it should be around high 70's/low 80's I believe.

Theirs also a actuator/n75 test under basic settings you can do that raises revs to 1400rpm. Boost should rise around 100mbar. But never tried it.

Logging group 4 will show sync angle. This will tel you if the timings correct. Should be 0 + or - 1.

Logging group 4 will show sync angle. This will tel you if the timings correct. Should be 0 + or - 1.

You referring to the use of vcds? Can these things be done on the lite version? Thanks

Sure can. Might not be able to do the actuator test in basic settings. But measuring blocks is fine.

Sure can. Might not be able to do the actuator test in basic settings. But measuring blocks is fine.

Thanks!

Mine was out a few degrees after I did the cambelt. It lost 10bhp

Just to keep this up to date, here's some logs, the MAF one is certainly interesting, requesting 850 flat out and exceeded to 1200+ the whole way just about..

Requested is only used for the EGR system. So nothing to worry about its normal

It's overboosting, question is why. Duty cycle is a little high so may require the rod lengthening?

Well timing seems ok, synchro angle at idle ranges from 0.0 - 0.6