Help Power Loss After Powerfc Install

[juls33]

standard r33 series two with pod and 3.5in to 4in turbo back exhaust

made 162 kw@w

after power fc install its got 145kw and surges at cruze and sometimes it cuts out all together

compression is good new plugs etc

so my question is why did i spent 2k plus buyin this thing and getting it tuned ??

any idea?

can i retune it myself?

Edited February 7, 2007 by juls33

[R31Nismoid]

Its not an issue with the PowerFC itself dude.

If you are not familiar with tuning, i would strongly advise against it.

Did you just change ECU, and tune it?

Nothing else at all?

[juls33]

i had the power fc tuned by a wksp

change the ecus over and its normal ????

ecu was the only thing he changed

  R31Nismoid said:

Its not an issue with the PowerFC itself dude.

If you are not familiar with tuning, i would strongly advise against it.

Did you just change ECU, and tune it?

Nothing else at all?

[Risking]

Surging at cruise could be due to it running very lean. If the workshop you used is not really a "tunning" shop then id suggest getting it done properly by the right place.

[juls33]

the wksp i used is a tuning wksp

it cost me a tad under 1000(just to tune) so im a little pissed

Edited February 5, 2007 by juls33

[QRI05E]

$1000 for just a tune? My gosh i would be pissed! $500 - $600 is the usual price for a full tune... $450 G.B at J.E.M for a full tune if your in Sydney...

The Apexi PFC comes with a base tune that is made to plug in, start and drive.. meaning if your car is worse then before, its either:

- Poor tune

- Dying part (Fuel pump or AFM)

My advise would be to take it to a reputable tuner, get them to put it on the dyno and diagnose the problem before you end up needing a rebuild.

PM me if your from sydney... got a Dyno Day coming up soon... for $50 its the cheapest insurance for your engine...

Cheers

[juls33]

no im in townsville thats why soo expensive

only one tuner i used to trust :-{

ohh and my fuel economy is very poor 205 km to a full tank (50l)

fuel ratios are spot from the dyno printout

Edited February 5, 2007 by juls33

[captinsane]

  juls33 said:

no im in townsville thats why soo expensive

only one tuner i used to trust :-{

ohh and my fuel economy is very poor 205 km to a full tank (50l)

If you're looking for help in TSV...try posting in QueenslandStreetScene.com and someone may be able to help you. I am a Stagea owner in Townsville but I am not up to the stage of performance tuning and so am not really able to assist you (The Stag is almost completely stock at the moment).

Hope this is of assistance...

...Chris

[BHDave]

For that price they should offer after sales support. Take it back. Get them to drive it and point out what you aren't happy with.

As for the peak power, it's only part of the equation, was the 162 on another dyno or the same one? They don't necessarily read equal.

145 is pretty low, but without a decent intercooler it could have been heat soaked to buggery when the last power run was made.

And with that economy you should make sure they have the closed loop control on. Your O2 sensor could be on the way out but i doubt it

Edited February 5, 2007 by BHDave

[juls33]

its not the engine it has to be the tune i can plug the old ecu in

and it heaps better and no dramas

162 was third gear peak at 115kph standard ecu

145 was 4 gear 150kph pfc

same day same dyno ?

Edited February 5, 2007 by juls33

[nissanmanS12]

Are you running an extra injector at all?

Did you get to use the standard apexi map it came with??

[juls33]

nope standard nothin extra

i drove it with the standard map briefly

not long enough to say either way

i can say it didnt have the holes like it does now

it just seems to lose its place or something and

cut ignition , do pfc have a self diag?

[tridentt150v]

If they didn't disable the boost controller in the pfc, or they set the boost way low [like 3psi or something stupid] maybe..................I really don't know, I'm just wondering if this could be a problem, someone with more knowledge than me may be able to answer.

[juls33]

spot on i had to turn it off (boost control)

still didnt make a diif however

[Race_Bred]

  juls33 said:

nope standard nothin extra

i drove it with the standard map briefly

not long enough to say either way

i can say it didnt have the holes like it does now

it just seems to lose its place or something and

cut ignition , do pfc have a self diag?

ive just installed my PFC running the base map un-tuned and its given extra power straight up, theres no way you can go backwards, definately take it back to them, you paid good money for the tune, be firm let them know you want it sorted out cause thats horse sh*t, or atleast get them to find out WHY its gone backwards anyways if you want help with the PFC check out this link its tops

http://paulr33.skylinesaustralia.com/docs/...rfc-faq.htm#end

[paulr33]

take it back and ask them, a $1000 for a tune is heaps. i would be happy with $500 at the most. read the pfc faq (in my sig)to find out about your fuel economy and tune types. this will give you some info and help sort it out with the tuner. there is no reason you should loose or power. its all in the tune

[sinistaGTR]

This sounds dodgy as....i mean 1000 for a tune that uses a shitload of fuel and is making less power and driving like crap.....does it drive normal with the standard ecu in

[R31Nismoid]

Sorry if you already answered this (only had a quick skim)

Have you put the factory ECU back in since this problem came about?

And see how it goes then?

If it runs ok with the stock ECU, i'd be going back to the tuner and asking what on earth they didnt do

Especially for $1000 mate, thats an extremely hefty bill for something if its not right.

For $1000 they should have had the car running perfectly before you picked it up

[Robo's]

Take it back to the tuner regarding the holes, you paid good money for it.

[dead32]

200k per tank jeez!!! it would be pumping heaps of smoke out.. i wouldnt trust the dyno either,, you cant compare a run in 3rd at 115 and a run in 4th at 150km for starters it should be making alot more power than that w/e gear it was in.