R33 210rwkw Major Boost Drop, No Top End?

[discopotato03]

If you can tap into the exhaust manifold somewhere and do a pressure test it should tell the story . Need to compare exhaust manifold to inlet manifold pressures .

Cheers A .

[BHDave]

Just a couple of questions:

What actuator are you running? As the spring may be a bit weak

What comp ratio are you running? As you have a built engine (so can specify the compression) and metal head gaskets come in a range of thicknesses (so can further alter the compression).

One other thing worth noting as well, your dyno runs have the intake temp at 40 degrees and the room temp at 20 degrees. Please tell me you were running with the bonnet down as otherwise you are probably making less than 210 and the figures have been skewed.

[GTshortie]

Mechanic(whom built the engine) said compression around 8.0.1 or there abouts.

Yes Bonnet was down/closed, tuner said it'll give more realistic figures so that can justify the extra heat.

actuator? Whats that again? Is that the spring on the turbo which adjusts the boost? Well i'm running an apexi avc-r (current model) if your refer to boost solonied.

Internal Wastegate in turbo,

also forgot the mention (tomei/or sard fuel regulator can't remember)

[BHDave]

I only asked about the compression because it's a lot of boost for that sort of result, where as a lower comp engine would require a little bit more for the figure.

The actuator is the bit bolted to the side of the turbo that looks like a cylinder with a rod sticking out of it that attaches to the wastegate flap. If the actuator spring is too soft (which i suspect it is) then the AVCR wont be able to hold boost no matter the duty you run. It's not the stock one is it?