MicroSquirt.com read only forum (Jan.15,2018)

Hallo
I have problem to tune my MS-2 on my racing engine with ITB win Suzuki Swift Kit Car. Because I instaled during winter also 290 degree cams and full racing spec exhaust system, I didnt know if problem is only with tuning or mechanical. Engine hadnt good performance, extremly rich fuel atc...

So I decide to remove ITB, remove MS and modified wiring and I instaled stock intake manifold with bored throttle body, stock ECU with factory group A rally chip. I also have to install MAF.
I did test drive and my Swift was flying. Sooooo fast. With wll tuned engine there can be 160 hp from 1,3 NA engine. So I know that mechanicaly engine is corect, Timing for 290 degree cams are correct, exhaust system is working also very well.

So I need to tune my MS. I decide not to install ITB on engine now and try to tune MS-2 with stock intake manifold with 60 mm throttle body. But what will sure helps me is to datalog stock injectors ms /rpm /kpa to calculate VE table.

I read in some threat that it is possible but didnt find the way how to do it.

The timing map i get from group A rally chip and I hope that i understand it correct.

http://lander.tuning.cz/ignition.xls

Understand I it correct that on left it is RPM (is scale correct when engine with this chip has rev limit at 8600 rpm). On top it is volume of air? Engine has MAF, so it can be only MAF, or it can be combination of MAF/TPS

Or is there any way how to measure also timing?

Please help me to tune my racing engine. With Group A rally chip it has great performance, but it will be nice to remove MAF and install ITB.

Lander

bump

Nobody can help me to look on that ignition table?

Lander

Filip,
Go back to ITB, get rid of TB and manifold, and run Alpha-N without MAP.