paulr33

if the engine check light stays on it means a sensor is out of range, not working or giving incorrect values. when you see it on, look at ETC, SENSOR SW CHECK and look for any sensor names with a black background around its name. this indicates the fault sensor if you enable the boost kit for enable and dont have the map sensor harness connected the engine check light will be on and BOST under SENSOR SW CHECK will be highlighted, indicating the boost map sensor isnt working or out of scope (ie: its not plugged in)

nah when you are in map tracer press NEXT again and it will go in ghost trace mode which keeps the cells highlighted on the screen for you get a photo of that if you can you can also press UP to pause the output

gear ratio should be 1 final drive should be 4.11

whats it say on the bonnet? BD4's something ?

can u get a photo of it ? or plot it onto excel?

im curious how you would wire a PFC in piggyback mode? what would u run directlty to the FC? everything but IGN timing?

oh fiddlesticks, i was in nsw about 3 weeks ago sorry. so because i am a moderator i am not allowed to discuss things and disagree with what someone says? what a load of rubbish. and even if it does drive fine, which it says in my so called book i still dont see how its not making it harsh for the box. but what do i know, like youve said and its hardly a book, its a self help guide for people asking the same questions over and over. i mean i can delete it if you want and poeple can keep posting the same questions each time, would that be better? anyhoo we are both set in our ways, your sure it works fine and im sure that its the same as factory as it wont cut timing so lets move on with our lives. divhunter is the next pfc user to try it on auto and he's in vic so i will have a look at his car. i will be interested to see the map tracer runs from it, ive asked for them a few times off people but never got them. i am more curious to see how as i want to understand how it varies over the manual setup. but no one seems keen to send them to me, so thats cool will see it when he has his pfc working.

nah if you unplug the stock 02 sensor it shouldnt cause any problems, fairly easy to try. it wont go into limp mode, it just wont run closed loop. limp mode on the stock ecu is simply rev cut at 2500 which is activated by disconnected or faulty airflow meter. around 15.5s is about the safest light cruise afr you would want to dial in. any more and the exhaust gas temps get really high and risk the engine. mine are tuned around here and it works really well. i got just on 540ks to a tank on highway driving

i run my PFC with closed loop feedback off and ive tuned it via a wideband sensor so the economy is pretty good now. its better than what it was with 02 feedback on so its not a big deal. you could simply unplug the 02 sensor and then tune with the piggyback system, i dont see why it would be a problem i forget how the logic for the auto works exactly but i am pretty sure the stock auto ecu has patterns for gearbox change gear patterns and simply follow these to work out when to cut timing, it didnt know the r33 has a stock ecu & gearbox ecu. can anyone clarify? even if it does, the stock ecu still needs to cut timing so its not different. has anyone tried it with the wolf3d v400 ?

well if its a piggyback then the stock ecu would cut the timing from underneath the fcon so it would simply follow the stock ecu's lead on cutting the timing, piggyback'ing is fine there should be no issue whatsoever with piggyback onto stock auto ecu. its only when you rip out the stock auto ecu and replace it with a manual ecu, as the manual ecu has no auto logic control. manuals ecu's are any ecu that has no logic control (so any ecu other than stock)

yeah the best comprimise that i can think of is either a piggyback system so something like emanage, microtech, or any form of piggyback or change to a mech auto box. but this is assuming you actually care about the auto box and worry about it. some people dont, so in their case it probably is fine. but i dont accept the "its the same as stock" as it cant possibly be. would also love to see a map tracer run of a gearchange, still waiting for this. this could yield some info for us and possibly provide a 3rd party hack for cutting timing on gearchange

well if it has an auto computer or not, it changes nothing the auto logic to back off timing is inside the main ecu unit for nissans. for toyotas its in the seperate computer so this only applies to nissans. the PFC is a manual ecu only, it is clearly stated in the manual, production documentation and various distributors who sell it. there is however apexi powerfc auto versions for toyota chaser as the logic control is outside the main ecu they are able to work with it. there are a fair few extra functions on the auto powerfc for gaerbox control, speed ramping, change logic and speed based gearsetting

well if its reading ok with the car off then it could be ok its too hard to tell. can u just take the car to a mechanis or workshop? if you try and start the car and watch SENSOR SW / CHECK what do you see ?

no its not the case at all. the drag cars dont use electronic auto boxes, they use mechanical ones. like the one in the vl turbo. it doesnt need electronic crap around it to cut when changing gears. the electronic boxes do. using a manual ecu on an electronic auto like the one in the r33 will not cut the ign timing on gearchange. its not to do with gear change logic, the auto box knows how to change gears, its do with change gear preparation, that is, stock ecu has logic for when the auto box is about to change gears and cuts the ign timing to protect the auto box and ensure its a smooth change. it wont be stuck in 3rd or anything like that at all. what you are certainly likely to see detonation on gearchange map tracer showing load staying near the middle on gearchange (inducing more possibilities of detonation) harsh or jerky changes delays with kick back and change down kjb is right the back off timing is there to take torque load off the auto box and thats its sole purpose. without, you are placing more stress on the box and what ever other gremlins hide away. by all means go for it. send us a map tracer of a gearchange, someone ?

ah yeah misssed that point nah boost wont affect idle have u checked cooler pipes etc for leaks ?

oh you didnt mention those mods does the problem occur if you turn the boost down

check out what thizzle has he has cams with gtrs making 300rwkw might have to search back a bit or perhaps try pm'ing him at least i am pretty sure he has cams with 300rwkw

check the cars voltage, if its f**ked, ie too high or too low the car can run like poo. check voltage from ground at idle. also check afm plug

500mv is about spot on for car not started and z32 selected

there is no such thing as the auto trans computer in the r33 the gearbox logic is done in the factory ecu, so theres nothing to fix. your ecu needs to be aware its on an auto car and cut IGN timing on gearchange. it needs to know when the auto box is about to change gears imho no aftermarket ecu will do it

I have been there, and booked us some space but they can't do it until saturday. So I will be there at 11am to book us some space. Hope to see you all there. Will try and hold spots for say 40 ish people I will aim to hold two of the long tables out in the front area for us. They will put up some reserved signs for us too

yeah another 2530 would be the cheapest and easiest of them it sounds like

yeah the stock system with a bigger than stock muffler makes it fairly loud i dont think a stocker exhaust gtst with a different muffler would pass

i am going the belgian in a few minutes to try and reserve some tables for saturday, i dont think they will let me, but will certainly try

im not sure what you are asking? if the timing is too advance, back out timing using the temporary IGN adjust or edit it on the maps. this is covered in the PFC Faq in my signature. there is no need to load someone else's maps, in fact its probably a bad idea