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R33 Rb25det w q45 TB Z32 ecu, reset needed?
Posted: Wed Apr 13, 2011 1:37 am
by brother_david
Ive got a rb25det with a Z32 box and recently installed a q45 Tb, now im wondering if i need to reset the tps/ecu by switching the ignition on and off 20 times?
Re: R33 Rb25det w q45 TB Z32 ecu, reset needed?
Posted: Wed Apr 13, 2011 3:17 pm
by Matt
Never heard of that reset before?
Shouldnt think so. Just make sure TPS is positioned correctly and check TPS idle light illuminates when foot off throttle
Re: R33 Rb25det w q45 TB Z32 ecu, reset needed?
Posted: Wed Apr 13, 2011 6:11 pm
by brother_david
I thought it sounded a bit weird, found it here i think but i might be wrong. Wasnt looking forward to spending half an hour just turning the key. I still have to find why its idling so rough, didnt do that on my stocker w Nistune, though now. runnimg a spec 2 engine instead, w sard 850s, gt3071r, q45 tb and afm so theres more to tune now
Re: R33 Rb25det w q45 TB Z32 ecu, reset needed?
Posted: Thu Apr 14, 2011 12:04 am
by Matt
Injectors that large wont help with trying to maintain a nice idle. My R34 using the same turbo does well on 480CC Injectors @ 300rwkw
Re: R33 Rb25det w q45 TB Z32 ecu, reset needed?
Posted: Thu Apr 14, 2011 1:10 am
by brother_david
Ok no need to try to hard then, ill try to adjust the latency to get it somewhat better, got the roadchecked on friday, need that afr to be somewhat more steady by then or ill have to put the stocks back in i guess
Re: R33 Rb25det w q45 TB Z32 ecu, reset needed?
Posted: Fri Apr 15, 2011 2:52 pm
by PL
As long as the TPS Idle light is coming on then you should be able to get idle right. I often cheat and use injector latency to trim idle/low load mixtures. But you want your K constant and fuel pressure to be in the right place before you start playing with latency.
It also comes down to the quality of your injectors. It seems to OEM (JECS) units are hard to beat. I've done a few engines with 740's now and had no trouble getting a factory idle out of them. These all have the nice 4-way spray pattern. If you go to something like a used set of the old RX-7 injectors then you may suffer from idle problems.
PL