Bitchin' TBI

[dave w]

Hi dave,

I converted it to a 7427. It had some weird ECM service number I don't recall ever seeing before, basically same as 747 IIRC?

You have the option to tune with a Wide Band O2 Sensor (WBO2) with the 16197427 type PCM; http://www.gearhead-efi.com/Fuel-Inj...g)-Spreadsheet

That's how I would tune your engine.

dave w

[CDeeZ]

How come you didn't use the MAP vacuum port on the back of the throttle body? I think that's a ported vacuum spot you're using. And did you have the PCV hooked up when you cranked it?

Hmmm... I looked at an extra throttle body I have and I see what you mean. It looks like they're still connected to both of the throttle bores at some point though? I have moved the MAP line connection back to it's original position to experiment with later tonight. I need to look more closely at one of the throttle bodies I have laying around, perhaps the location I was using for the MAP was ported as you say, and not below the throttle plates..... Good catch on that one for sure. Not running a PCV on this one. Will probably do a catch can later but just a breather for now.

You have the option to tune with a Wide Band O2 Sensor (WBO2) with the 16197427 type PCM; http://www.gearhead-efi.com/Fuel-Inj...g)-Spreadsheet

That's how I would tune your engine.

dave w

Yes, I actully downloaded your spreadsheet a couple weeks ago, when I was getting ready for this thing haha. It's a nicely put together easy to use spreadsheet. Thanks for sharing it!