Stage 2+ ed30

[P30egy]

Spoke to the tuner who as seen the logs and he said there is no boost leak, I've checked the dv visually is fine. Going to try the maf tomorrow.

[Madone]

Fuel pressure worth checking too

[P30egy]

Will do but the first time the light came on the internals where replaced with autotech and pump rebuilt with new seals etc.

[Madone]

Can you get hold of vagcom ?, log requested verses actual fuel rail pressure. That will tell you if the pump is meeting demand, and also what is actually being requested. It could be the map is set to low settings and only trying to make 315bhp. And in fact you don't have a hardware issue.

I don't know what a stage 2+ revo map requests on average for fuel and boost, fuel should be requesting and meeting 130+ bar I would think, and boost I would have thought 1.4bar upwards ?. I am sure someone else with a 2+ revo will know.

I just fitted a rs4 valve to my car, the standard one bleeds off at 130bar so you might be unlucky and have one that bleeds really early in which case you rail pressure cannot meet the requested numbers.

[P30egy]

Looks like replacing the maf and fitting a g dv as fixed the engine light problem, car feels a lot better now? Also I've been told running in 5th will not give a true bhp reading, how true?

[Dan648v]

4th gears in most modern transmissions give near as dammit 1:1 gear ratio.

http://forum.miata.net/vb/archive/index.php/t-21001.html

Kind of explained in that link and to how it effects the figure you were given and to how it can make the figure you got lower than expected!
Maybe try another dyno before you chuck anymore money at potentially not a problem.

[Madone]

Worrying the dyno operator doesn't know which gear to run in !,

As mentioned, don't throw anymore cash at it until you know a: what the confirmed power is and b: what the issue is with some diagnostic runs, you could be throwing money away