mxv

iTrader: (4)

Got the miata running again after being down for new everything. Got it out for its new tune and i have one of the problems i was suffering from ever since i turbo'd the car. it started up un noticeable and has gotton worse and worse. i am getting a big time sensor issue at 3800 rpm and only at this rpm. as long as i am out of boost or not getting on it hard i can go right thru the rev range fine, but when i am at 5 inches of merc or in any boost it bucks like a mother ******. after looking at the datalogs right at that rpm on my tuning pulls it shows huuuuge fluxuation in the coolant temp sensor going to straight cold to full hot wildly and same with my intake air temp sensor and now its moving into my map sensor showing some changes too. and my injector pulse width is going thru the roof too. its only at 3800 rpm under load. i am thinking something is throwing some rf but i am not sure, any ideas on this?

(shows up at the coolant temp sensor first, then the injectors, then the iat and then the map)

richard_ha

Have you got a knock sensor connected to the CLT line?

mxv

iTrader: (4)

no knock sensor

timk

The RF is coming from the Civic.

mxv

iTrader: (4)

hahaha thanks sab...long time btw, IM me you ******

Joe Perez

iTrader: (8)

See my recent thread entitled "GODDAMNMOTHERFUCKINGSHIT". It addresses exactly this problem.

samnavy

iTrader: (7)

Put your MSQ and a datalog or two into a zip file and post it so we can see.

Braineack

iTrader: (62)

+1, we need sometime to work with; however, $10 says it's overboost protection.

mxv

iTrader: (4)

alright, i am getting my tuner to email me some of the pulls. ill have those up either tonight or tomorrow. i can boost on it fine as long as its not at that rpm.

richard_ha

That rpm will be when you are generating the most boost though

mxv

iTrader: (4)

it does it even when not in boost at that rpm too though.

Braineack

iTrader: (62)

upload your msq as a zipped attachment.....then go out and take some datalogs and recreate it, then upload those. 5 minute investment for free help.

mxv

iTrader: (4)

working on it. ill have them tomorrow probably.

mxv

iTrader: (4)

.... and two weeks later...




sorry they are just screen shots, i can get the full log files if you guys need.

Joe Perez

iTrader: (8)

Full logs, and an MSQ, would be helpful.

So would an explanation of your TPS reading. Granted, the RPM and MAP look funky as hell, but the TPS just looks downright impossible.

mxv

iTrader: (4)

tps wasnt plugged in. ill try to get the files up.

Braineack

iTrader: (62)

just by looking at it i bet accel enrichments are on and kicking in prematurely, but we need the log posted so we can look at it all ourselves.

Joe Perez

iTrader: (8)

The flutter in the RPM signal is what bothers me. Not sure if it's the cause or a symptom, but something ain't right about that. MAP and PW can go all to hell and back without violating any laws of physics, but RPM just can't do what the log says it's doing.

The timescale is just too damn wide in that screenshot to see any detail.

mxv

iTrader: (4)

thanks guys, my tuner has been really busy lately so sorry for the slow updates but I WILL get those msq's files up for you guys. thanks again.

mxv

iTrader: (4)

here it is...