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Sounds like the ECU. Capacitors failure if I had to guess. If you have a JWT ECU then you can send him a replacement computer along with yours and pay them to move their board over to the replacement ECU. This is what I had to do. The wide band and narrow band signal are reading correctly and accur...

So the next question is... do you think its the ecu or the narrowband voltage from the O2 getting stuck in rich mode for whatever odd reason up to that point which is the coolant temps reaching ~175F ... which may have nothing to do with it (maybe coincendence) or it could be until the exhaust gas t...

I experienced a similar issue years ago when i was still running tuned stock ECU. I'm assuming you are getting your O2 voltage values from what the ECU sees. If this is true I would disconnect the narrow band signal and check with the signal voltage from the O2 with it disconnected. There is a chan...

Are you running stock O2 sensor still for the computer? If so, what's your O2 voltage reading from cold to warm? OK... so upon COLD start the O2 sensor (narrowband output from wideband) reads .44V upon cold start with wideband reading 14.7, then stays solid for about 30 seconds when the O2 voltage ...

No, the wideband 02 i am using is the Bosch LSU4.2 which has the narrowband output wire for the ecu and the normal wideband signal for the PLX module... But i can check those voltages and compare to the fsm...

Ok.. sorry i am about 8 months LATE... My job transferred me out of state for work the 1st week of September... Been living in an apt for 8 months ... But i am finally back home.. Back to this rich issue....I cranked up the car and getting same issue, PIG rich 11.0 from cold start to about 165F... t...

So i got the new MAF pigtail ... Wired it up and immediately saw a difference. This time when i cranked the motor up and the second it fired over, the rpm's went to 1500 rpm and the idle was SMOOTH.... Where as before with the old maf pigtail with loose wires, when the motor fired over, the rpm's wo...

So... i went out to get the voltage readings from the maf sensor harness and as i grabbed the wires to move them to pinch into them, the motor stalled out... So i cranked it back up and started to move the wires ever so slightly to see which is causing it, and it seems like the black wire (center) w...

So I got a new fuel pressure gauge, upon ignition the fuel pressure goes to 40 psi then drops to 37 psi .. And holds there, I start up the motor and wideband reads 14.7 for about 30 seconds then goes pig rich to 10's while fuel pressure remains at 37 psi solid ... I blip the gas pedal and the fuel p...

So i checked the ecu pins where the Water Temps Sensor wires are connected and checks out fine... It did the same at the ecu pins like it did directly at the sensor... So if its water temp sensor related then it has to be in the ECU.. Next thing i did was check the fuel press. They say that a fuel p...

Hmm .. You have a point there, I never checked it at the ecu harness. I had my meter at the sensor itself, when I get home I will check those readings at the ecu and update you

Speaking of water temp sensor I did read about that while doing an internet search about this issue about how it could be stuck in cold mode until it gets to operating temp .. So I read the fsm and it showed what resistance it should be at what temps and it read as if it was ok.. Cold motor it read ...

How old ... Lmao .. So old I can't remember when I purchased it literally ..!! All I know is that it's an old PLX wideband O2 with narrowband output for the stock ecu .. I took out the oem one and out this one it's it's place and wire it up .. It's been there for prob 10+ yrs easy .. not sure if it'...

So about 5 yrs ago or maybe a bit more i switched to E85, running a Emanage Blue, i upped the injector chart +35% at idle and during boost to compensate for the E85 conversion.. Kept the same Walbro 255LPH fuel pump, same 300zx fuel filter, same Nismo 615cc injectors… All has been good for the 5 yrs...

duncan351 wrote:Great! one of the best changes I ever made to the car. I love E85 over race gas! $1.79 per gallon over $14. You do the math and see how quickly it adds up. lol

oh do i know…

I need to do this... My single cam is only running about 7 psi and it's just obnoxious. Loud screaming from 2700-3000 up to limiter at 6k. It was pretty awesome at first but it definitely get's old. As soon as I get the engine swap into the rx7 done, that's the next project on the list. Nice fabric...

duncan351 wrote:Yea it's nice, isn't it? I love just hearing my turbo over wastegate.

i agree 100 %

How is your E85 conversion coming along..??

My noise doesn't come in until I hit max boost. I usually shift b4 that point when up uptown or it will do a nasty pull. If im running low boost say 10psi or less, I could see this being an issue. im only running 9 lbs and i could hear it start to open around 5 lbs and gets full open scream at 9 lb...

"Wastegate size for power level... 32mm up to 400hp 38mm up to 500hp 42mm up to 900hp 51mm up to 1400hp" Its actually the opposite… The Lower the boost/hp level the larger the wastegate needed … The higher boost/hp level the smaller wastegate needed.. Here is how it works… When your pushi...

The last time i recirculated the wastegate like 11 yrs ago it was done TOTALLY WRONG and i knew better and yet i STILL did it and got massive boost creep… That lasted one month before i cut that out and went back to open dump… SOOOO 10 yrs later "yesterday" of running open dump wastegate, ...

Currently on emanage blue (yes I know it's old) but I am needing to upgrade because I need larger inj and bigger fuel pump (due to my recent E85 conversion frm pump gas) and the emanage blue can only support 50% larger inj over factory (but some have gone over that with no issues) and the ultimate i...

duncan351 wrote:After many years I finally was impressed with ProEFI enough to take the financial plung and convert the S14 to E85.

Have you tunned yet..?? How much timing are you pulling back per PSI..?? I do hear that E85 loves timing, just not sure how much it actually likes or how much it can really handle...

so the general rule of thumb for timing retard on pump gas is .5 deg per lb of boost.... what is it for E85..?? im on stock ecu with a greddy emanage blue piggy back and im pulling 8-10psi... boost controller is OFF so im running directly off the wastegate... i have the emanage set to pull -7 deg ti...

Had my car since 2004, 2nd engine, 3rd turbo kit. Still running strong and loving it. Always puts a smile on my face after driving my hum drum direct injected turbo passat. Got mine in 2003. Boosted in 2004. It is currently sitting completely stripped down. :( LMAO… when i go to some of these 240 m...

So I get linked to a 900 hp ka-t video... chase down the website... astonished there is a ka-t community... then search the keyword 240sx.org for S's & giggles.... and this is what I find??!? Rob, where the heck have you been buddy? My day is made :D Shawn HOLY CRAP its you Shawn…. OMFG, your s...

Look what i ran into while browsing…

http://www.240sx.org/links/clubpix/s13sg1.htm

Here is the question i have, how many of those guys are still sporting a 240sx like me. Its going on 18 yrs and i am on my 3rd 240sx…. And yes my original S13 is in that group

Shawn Schembri… where are you LOL

oh yeah more is better. i was looking to weld two more fittings to the back of my VC so i have 4 total on the car. ran into this picture as well as MANY others about different crankcase evacuation methods… as soon as i read yours i was like.. hmm i saw something similar to what you want to do... ht...

fluid, air, sound are all lazy, they'll take the path of least resistance. due to the VC being a pretty straight shot for the air to go and the PCV having to dance through the separator you could say its easier for the air to go out the VC. picture a pail with two holes in it, if one holes bigger o...

jmac636 wrote:

How did you get that valve cover breather to aim back toward the firewall..??

air goes out your valve cover. you need to do the same thing with the pcv as you do the vc as they are both pushing air - start your car and see for yourself. its not possible to get one to flow in and the other to flow out. the whole point of a barb in place of the pcv is for vta. if your going to...