slo

iTrader: (1)

It only needs to be like this for about 1 month, before bieng replaced by a haltech.

items not stock (due to 13bre-vs 13brew keg:

huge step change going from lim to engine, should decrease flow.

much larger port runners (creating the step change)

smaller primary port inlets

smaller exhaust ports

huge FMIC (24x11x3)

catback, cats (both) replaced with "hf" 3inc cats in an ebay downpipe

HKS intake

should I be ok, I just need to get through a smog ref apointment in about 3 weeks then I will be tearing it all down to port and rebuild the engine.

Should I take the restrictor out of the watgate line?

fendamonky

iTrader: (6)

Ok.. call me an idiot, but are you talking about an FC, or an FD here?

DaleClark

iTrader: (55)

Stock computer should do fine. If the car starts, runs, and drives, you're OK. I definitely wouldn't get on it, and I'd put an intercooler coupler on loose to vent boost or the like as a just in case.

Dale

slo

iTrader: (1)

And FC with a 13B-rew and stock FD computer

As amazing as it sounds it does everything just fine, down to 2 minor engine codes.

All you FD owners who use a PFC for no other reason than to get rid of the 3K hesitation are weenies

fendamonky

iTrader: (6)

Thats not the reason we use the PFC, lol... at least as far as I know it isnt.. I use it because the stock computer sucks for any kind of mods, the PFC has better mapping and isn't likely to blow up your engine (which the stocker is a culprit of) if you go over 11psi.. not to mention you can tune it.

dgeesaman

iTrader: (7)

Because they prefer a car where they can "get on it"?

Dave

TTFD3S4U

I dont think i have ever heard of some1 getting a Power FC just to get rid of the 3k rpm hesitation...

sbnrx7

iTrader: (4)

^^+1

Speed of light

iTrader: (8)

I get the impression that many people have bought a PFC because they are told or *think* they have to have one, without understanding the purpose therof or the benefits and drawbacks to having a PFC. Unfortunately, this forum, as well as many ill informed members, have promoted the mindless purchase of PFCs--especially for those who don't really need one.

rynberg

I see no reason whatsoever that the stock ecu couldn't run that just fine at 10 psi.

Buckman66

I don't totally disagree with this statement as I suppose I could put myself in that situation. I have been playing with petrol engines most of my 52 years but have little experience with rotaries. I read all the forums avidly, and got that exact impression that a PFC is a must. Well my 94 typr R, with a recent rebuild ( totally stock ), ran really well , but the difference after I fitted the Apexi was very noticable. Smoother, more responsive and uninterupted boost. I wouldnt say my purchase was mindless, I did my homework beforehand, and I am very glad that I took the members advice and bought one. No I didn't really need one having no mods, but for me a true petrol head, the improvement far outweighed the cost.
As far as I can tell ( from a rotary novice ) the only drawbacks to fitting a PFC are the initial cost and slightly reduced mpg yes / no ??


Bob ( UK )

rynberg

You can get better mpg with the PFC, once it is properly tuned. The real negative is that it requires tuning for optimization (or even safety in some cases), and that there are problems with the A/C functioning properly with it.

slo

iTrader: (1)

well no problems for me so far, I was just kidding about the PFC comment, though I think the proper way to fix a hesitation would be better grounding, replacment sensors as required and new engine harness

as an xtra safegaurd in my own case I disconected the knock sensor, which acording to the service highlights manual has a failsafe action of a 6 deg ign retard. Seems to have just that effect.

The port difference between the 2 engines (guess at actual cause) make the car run rich above 4-5 psi boost, and the big ic seems to eat up some of the boost which would make sense because the wastgate is taking boost from before the IC.