luckythirteen13

waste of money. the fmu only adds fuel when under boost. you cant go into boost untill you get it tuned. when you get it tuned, you shouldnt have the fmu on there because its better to just have the correct size injector. just driving around town, the fmu does nothing

BackInBlack90LX

yea your right fmus are pointless for me i have 30# injectors and a 255lph fuel pump no need for me to have 1 so ill deny it when it comes

luckythirteen13

30# will probably be good for now but as soon as you do h/c/i youll need bigger. i have 55's on the motor in my sig and im worried they are going to be too small[:@]

samseed101

I'm walking a fine line here with my 30#ers, but I'm getting too cheap to change them, LoL. Sitting right around 330 - 340 rwhp with the supercharger and my injector duty cycle usually peaks out around 84 - 86% (Not an estimate... that comes straight from my datalogs.) Luckily, my nitrous wet kit provides another 100 - 110 rwhp kick in the *** so that doesn't affect the injectors. But it's still pretty close.

BackInBlack90LX

should i get a MSD BTM

FullAuto

You have a stock longblock and a 5-6psi blower. A single 255lph fuel pump will supply it. 30lb injectors are fine without an FMU. You stock unmodified computer with no tune should run all of this without any problems.

Did blowers just not exist before dyno tuning? What did all the Grand National guys do back in the late 80s? What are they still doing today?

The problems you're having are not going to be corrected with a dynotune. You have other issues. You should be able to just set your timing at 10* and run stock fuel pressure and rip on the car now. You aren't even making 300rwhp. If it won't idle, you've got other problems.

FullAuto

Not at you level.