How to Loose HP in a MPS

[Ranton]

First Take Gen 1 MPS with 201kw at the Wheels with factory ECU & Fuel Pump

Run a touch leaner than normal due to lack of fueling ability from factory (lean being 12.6:1 AF Same boost 17.2psi

FMIC Catted Downpipe..

Then Add a CPE HPFP to rectify supposed leaning problem...

Go back to the same dyno and loose 20kw at the wheels

For the sake of bringing AF ratio back to ~12.0:1

However

the bright side means when i actually get the ECU Tuned I have more room to breath..

Whats the highest peak boost most tuners run on these 22psi spike there for around 20 psi

or can we go higher.?

[Grajy]

201kw untuned???

[SarcasticOne]

201kw at the wheels on a stocker???
i know jase (gen 2) had low 200's on stock tune + heap of non-turbo bolt ons
luke on stock tune with BNR stage 1 and lots of mods, had 212

201 seems damn high though

[Toddy22587]

can't be untuned with those AFR id think. I'd like to see those dyno sheets.
from what i've read anything over 18 psi on the stock turbo will cause excessive stress (on the turbo) and lots of hot air.

[bd581]

Before it gets into a unrelated "those numbers don't sound right" argument.
I'll make the following change

Take a gen 1 put it on a dyno and received a figure.
Add a few bits and pieces, dyno again and lost 10% power against first run.........

[Scaredycrow]

Just something to think about: NZ has way better fuel quality than we do (and they pay for it) and its generally pretty cold (which turbo's like)

[CharlieBrown]

Just something to think about: NZ has way better fuel quality than we do (and they pay for it) and its generally pretty cold (which turbo's like)

That was my thoughts.. Ranton is a kiwi - those guys can almost see the South Pole I think... so it's cold = Nice IATs!

[darkness]

Just something to think about: NZ has way better fuel quality than we do (and they pay for it) and its generally pretty cold (which turbo's like)

i'm in the same place as him but didn't get anywhere near that number stock. I was on a different Dyno though, 166fwkw.

I didn't think our fuel was any better than what you get, but yes we do usually run cooler temps.

[Scaredycrow]

Maybe I read the OP wrong, but I took it to mean untuned. Not stock. IE the dyno was done with FMIC and DP.

"Factory ECU and Fuel Pump" Seems a little redundant if the whole thing is stock...

[rabba64]

Stock your looking a wheels on a 6mps 148awkw, as recently watched, and soon to have done to mine after a CES racing custom exhaust, K & N SRI your looking at 170awkws and further with a custom tune, 186awkws. 18psi boost it was tuned at, keeping it safe on stock turbo... As i said i was observing and listening. Now saving and planning on getting the same done