Quick Power FC question

D3S · November 23, 2005, 11:43:02 AM

Probably been asked before but can i run the powerfc on the rx, I.e have it fitted and not get it mapped without any ill effects? I was reading in jap perfomance mag that you could and it takes into account basic mods like air filters and exhaust (not decat)

Cheers

Gav

gavink · November 23, 2005, 12:10:20 PM

Hi...

Yeah you can it just runs a base map (like mine is at the mo)..pip at wgt said to me its rich and retarded (must be why my MPG is so crap!

)

It does take into account basic mods but depends on which version ECU you have i think as to exectly what..i know there is a base map (early ecu\'s) and a base map mod (later ecu\'s)

gavin

nikp · November 23, 2005, 12:12:26 PM

Yeah, i have a PFC on base map too. Runs fine - knock isn\'t too bad (Must be because its running rich). Did a run up to birmingham NEC on it and I worked out i did 15-16mpg running at no more than 80mph! :eek So, yeah, it is a bit rich!!

D3S · November 23, 2005, 12:13:20 PM

That is what i have heard it can run a tad rich

When fitting your ecu did you have to let the car idle for awhile?

Cheers

Gav

D3S · November 23, 2005, 12:15:43 PM

Well i have a week of work, i have the ECU and commander sitting on my desk and i am bored off seeing it there and want to plug it in so to speak. If i cant handle the MPG i will just run the standard ecu.

But hopefully i should get it mapped before the MPG does my head in lol

Gav

nikp · November 23, 2005, 12:30:39 PM

It\'s easy to setup. Unplug the old one (Passenger footwell) and plug new one in. Plug in Commander to ECU. Start car (with all electrics off) Run for about 15 minutes i think it is. Then turn the heated rear screen on. Keep running for another 5 minutes. Then turn off the heated rear screen and turn on the air con, and keep running for another 5 minutes. There. Job done! Easy as that!

D3S · November 23, 2005, 12:32:34 PM

Cheers dude,

But can i ask, the heated rear screen? why lol

Gav

gavink · November 23, 2005, 12:33:07 PM

yeah you have to do an idle learn process..start the car up with everything off,let it idle for 10 min..turn the rear window defrost on-let it idle for 10 min.Then switch the defrost off and switch the A/C on for 10 min..after that the power fc should of learned the idle setup..it says you may have to adjust the idle bleed screw also..(under the T/B elbow)..

I downloaded the FD3S RX7 Power FC FAQ and have it infront of me - think it was from rx7club.com but im not 100% on that..go have a look there is a whole section on the PowerFC....

gavin..

gavink · November 23, 2005, 12:34:19 PM

oops nikp got there first

:guinness

D3S · November 23, 2005, 12:44:46 PM

Nice one guys, i am going to fit it now, speak to you in few hours to let you know how i got on :wave

Gav

nikp · November 23, 2005, 12:55:51 PM

For some reason (I don\'t know why!) the rear heated screen effects idle - more electrical load. I have to turn mine on sometimes to stop my engine from hunting! Sor some reason, with the apexi on, it sometimes hunts at idle, but when i turn the heated rear screen on, the revs stabilize! Wierd - anyone want to offer an explanation!

gavink · November 23, 2005, 03:10:46 PM

Quote from: nikpFor some reason (I don\'t know why!) the rear heated screen effects idle - more electrical load. I have to turn mine on sometimes to stop my engine from hunting! Sor some reason, with the apexi on, it sometimes hunts at idle, but when i turn the heated rear screen on, the revs stabilize! Wierd - anyone want to offer an explanation!

Thats covered in this list i downloaded..

It says..

Ive done the idle learn process,but the car revs up and down at idle?
You need to adjust the bleed screw.recommended setting is about 1/2 to 3/8 of a turn out from fully in..

hope that helps

nikp · November 23, 2005, 03:17:08 PM

Wicked! Cheers mate! :guinness Mucho appreciated! I do know that the adjustment screw has been messed about with a lot, so that\'s a likely reason! Coolio!

D3S · November 23, 2005, 04:12:06 PM

well its all fitted, didnt take that long, took longer for me to decide where the commander should go lol.

Now maybe someone can tell me if i did something wrong, when you put the AC did you put it on full blast? as i only put it on half and when i put it on full it hunts at idle??? odd!

Also does the Power fc pick up issues with the sensors? as i have noticed the heat warning light comes on. But the temps are at 85C but when it comes on the air temp on the commander reads nothing, when it heat warning light goes off the reading comes back on the commander.

Any ideas?

Besides that it goes really well now and i dont get random boost spike

Gav

nikp · November 23, 2005, 04:14:46 PM

Yes, the ecu and commander can show up errors with sensors. The heat light is indeed an indication of something failing.

If you go to the etc menu, then i think its the second or third menu down (switch check - something like that) it will highlight which switch or sensor is going wrong by highlighting it in black. Post up here and someone can tell you which sensor it is.... although i think you have already figured it out!!