conrader

Hi there,

I installed Reverant's enchanced MS2 a week ago and I have trouble running boost over 4k rpm.

I noticed I have spiky TPS reading, but I have no idea how to deal with it. The car stumbles randomly over 4k RPM - the tach acts crazy too. This happens almost every time after WOT.

I'm attaching log screen so you can see for yourself.

Gt2560rMiata

iTrader: (-2)

Post MSQ and log file.

miatauser884

iTrader: (11)

It looks like you are going WAY to rich in boost. It might just be dumping too much fuel and causing a stumble.

It also looks like it is showing some kind of decel based on the TPSacc. Is your TPS variable and calibrated correctly? At the same time the TPSacc shows a drastic drop, your dutycycle falls.

conrader

I'm uploading msq and 2 logs. I guess there is some noise on the TPS - maybe because most of the grounds are hooked up to throttle body.

conrader

Unfortunately I can't upload any logs because even ziped are over 1 mb. Here is the MSQ.

Reverant

iTrader: (10)

Can you send the datalog to my email?

conrader

I just sent you the datalogs.

Reverant

iTrader: (10)

I can only see one sync loss, which is while idling (I presume from performing a burn).

At the exact moment you posted, you were going full rich (less than 11.0, as low as 10.3), and your coils can't handle that rich of a mixture, resulting in misfires.

Your tacho is bouncing because its driven by your coils on your 94 - multiple misfires will result in the needle bouncing around.

conrader

So if I go leaner on boost say 11.5 - 12.0 it should help?

I'm running COPs btw.

Reverant

iTrader: (10)

Aim for 11.5-11.6 in boost.

Reverant

iTrader: (10)

Btw even LSx coils will misfire at ~10.2.

Braineack

iTrader: (62)

your TPS signal is very noisey still and triggering AE events.