Standalone VS Piggyback ECU's

[fabr]

You have a way to log A/F ratios to tune it?

[RC51 Rhino]

 I dunno....do the newer Power Commanders do that?

[fabr]

I use the stuff from Innovate.    www.innovatemotorsports.com   I think it would be a good idea to study their stuff and ask questions as necessary either here or on the Innovate forum before buying to make sure you only buy what you need/desire..  I haven't kept up with anything new in the line of Powercommanders but so far as I know they have no ability to log anything. You would need a PC though to alter maps if using a piggyback system.If you go with the Innovate products we cannot stress enough the importance of following to the letter wiring instructions especially the negative/ground/earth or whatever you wish to call it. VERY IMPORTANT or you will be disappointed.

[chrishallett83]

You gotta decide whether to use a 1:1 regulator or a rising rate(FMU) regulator though. Depends on the needs of the system. I have no idea which for RC's setup tho.

If RC51 is wanting to try and use standard injectors with a low-blow turbo setup, the rising ratr reg will help squeeze a bit more headroom out of the stock units with out hitting 100% duty cycle. Also in a setup that utilises higher boost pressures (high enough that this probably won't apply to RC's case), big boost inside the manifold can affect injector spray. If your injectors are designed to operate at 50 psi feed into an atmo manifold and you pump 2 bar of boost into it, then you've got 30 psi acting against your injectors, which can seriously degrade fuel atomisation and flow.

Personally I'd always use a rising rate unit on a boosted car.

They have a slower burn rate and therefore will tolerate earlier ignition producing higher cylinder pressures without detonating at the higher cylinder pressures.I completely agree with the rest of that.

That too. However that doesn't negate the point I made.

[fabr]

I'm questioning the lower heat content statement. Maybe I'm wrong tho.

[RC51 Rhino]

So using a rising rate regulator, I still need the PCIII (of course) and a data logger? How much boost am I looking at using? I'm still new to turbos except on my Cummins and I know I can't get that much boost into the RC!!!

[fabr]

My guess ,and it's only a guess, I think you can do around 8 pounds boost with the FMU safely. 8-10 pounds is very doable safely with the busas anyway.