After a couple of Drag strips, the Q1 transistor blew out.

hzdistributor · Post by **hzdistributor** » Sun Sep 03, 2006 4:57 pm

I have four 850cc with 2.98oh injectors and the PWM setting in 75%. MS-I with PCB2.2 fuel only Stock code 8x8 tables.

The engine is a 2.0l 8V Turbo Engine in a Full chassis car running 9.67 in the 1/4mile.

jsmcortina · Post by **jsmcortina** » Mon Sep 04, 2006 2:25 am

9 sec 4 pot. Nice!

With the V2.2 board you will need the flyback board to reliably drive those injectors. This is a known failure mode and has been addressed in the V3.0 board.
Check out the flyback section of the megamanual.

James

boost junkie · Post by **boost junkie** » Mon Sep 04, 2006 3:49 am

Another option is injector resistors and the high-res code (which will definately help it idle on 850cc w/ a 2.0L). See the MSNS-E dev forum.

racingmini_mtl · Post by **racingmini_mtl** » Mon Sep 04, 2006 6:04 am

A third option is to use peak and hold injector drivers : http://www.msefi.com/viewtopic.php?t=19661

You can use these with any code be it the standard code or the high-res code. I agree with boost junkie that the high-res code would be a good choice for you.

Jean

hzdistributor · Post by **hzdistributor** » Mon Sep 04, 2006 3:56 pm

I'm planning to use a resistor so I let you know guys....