Opinions On Current Setup On Mate's Car?

[Touge Kyousou]

Heya all,

Just looking for general opinions on a setup for an r33 my mate recently purchased e.g. it's not making enough power, it's running too high boost, i would change that etc. Basically what to do, what's right for the engine/setup e.g. wind boost down or leave, add more support stuff etc.

It's an r33 with a series 1 rb25det.

It's been rebuilt 65000 kms ago with new nissan parts like rings, rods, gaskets/hoses etc

It's got a boxed pod, z32 afm, gt2871r .86 housing, fmic, head ported, valve guides trimmed (what does this do lol?), tomei valve springs, tomei ex cam gear (retard 4), 3"dump/front, 3.5"exhaust + hfc, 0.050 o/s bore, alloy rad.

In terms of support stuff for power, there's a nismo fuel reg, apexi power fc + boost control, some FET coilpacks.

It runs high boost 1.25 setting on the pfc hand controller (is this 1.25bar?) and that was around 240kw according to previous owner. Lowest setting is 0.90 on pfc hand controller. The daily setting is 1.1.

Opinions & thoughts? Mate is looking for response and average power (i.e. curve) not peak warp speed type power.

The car currently seems to run very well and has pretty good response.

[tridentt150v]

valve guides trimmed (what does this do lol?)

for cam lift, and/or head flow, what size are the sticks?

BTW I think the turbo is a bit small for what you want, 240 sounds about right otherwise.

[Touge Kyousou]

Great thanks mate.

The cams are stock, just the exhaust cam is adjusted via the cam gear.

I think my mate is happy with the power, though if there's a better turbo that gives more mid range and better top end...well that's just win!

Is he able to adjust the boost via the pfc without a retune (i.e. do the boost settings all run on one tune/map or each boost setting has it's own correlating map?)

[R31Nismoid]

Any turbo you chose will make more power, but at the expense of midrange compared to what is on there now.

That's just how the world works.

~18-20psi/240rwkw from that turbo sounds about right, it won't be making anymore power than that.

[TiTAN]

Great thanks mate.

The cams are stock, just the exhaust cam is adjusted via the cam gear.

I think my mate is happy with the power, though if there's a better turbo that gives more mid range and better top end...well that's just win!

Is he able to adjust the boost via the pfc without a retune (i.e. do the boost settings all run on one tune/map or each boost setting has it's own correlating map?)

one fuel and ignition map, up the boost to the max it was tuned for, i wouldnt suggest going higher than it was tuned for. stick it on the 1.25bar setting and leave it there, nothing wrong with running 18psi on that turbo everyday.

[scotty nm35]

He is already running a perfect turbo for response and good power. Add E85 and a bit more boost should see him over 270kw with a great midrange curve.

[Touge Kyousou]

Thanks for all the helpful replies guys, much appreciated.

This is really good news for my mate, i'll let him know.

The reason i asked about changing the boost setting was not to raise the boost but to actually make low boost even lower - just so there was more gap between sedate and arse on fire mode. And yep E85 is on the cards.

Thanks all!

[tridentt150v]

There is no advantage in running low boost except on wet greasy days, leave it on high all the time.

[GTScotT]

+1 that setup sounds good and is doing what it should

[Touge Kyousou]

Rather than starting a new thread hoping some of you knowledgeable folks can provide input here.

In terms of running the above mentioned car on e85, what flow upgrades are needed if needed ie.

With regards to fueling, the car has tomei 550cc injectors, nismo fuel reg, bosch 044 pump mounted in tank, and is bored to near 2.6l capacity.

Already have a tuner in mind so that's ok.

Thanks all.

[R31Nismoid]

555's will be plenty for that setup to run on E85

[Touge Kyousou]

Thanks R31Nismoid

Would the fuel pump be ok too ?

More good news, just gotta pay for tune then with no parts upgrade involved.

[R31Nismoid]

That pump should also be fine mate.

You need to ensure the pump is getting the correct voltage - read the FI Guide for a link to a "how-to".