I'm in the process of swapping in a new 350 and installing a TPI setup for induction. I have already modified a '7427 ECM to run the batch fire setup on TPI. I like this little ECM, used it when I converted my 78 Vette to TBI, so have some familiarity with the $6E mask.

My only concern is the initial break-in time when I fire up the engine for the first time. Roller lifters, so I should only need to run it for 10-15 minutes at 2,000-2500 RPM for the rings to seat. Thought I would check if anyone as a bin that I could use to get the car started? Tuning the Vette was fun, and looking forward to dialing in the TA once it is up and running.

Or could it be as simple as using the bin on my Corvette, making slight adjustment in Tunerpro to indicate it should be batch firing?

Any help will be much appreciated!

 

I personally wouldn't bother with a 15-20 hold at rpm for rings on a roller, that procedure is meant to seat flat tappet lifters. I may take it a little easy driving at first but to seat rings I like to run the engine under alternating load and coast. But usually when I set out to do that I end up doing burnouts and really ringing it out (no pun intended). To get a bin though, you will need to give some engine details on the new engine, i.e. cam, heads etc. My guess is that if it is the jasper (replacement) called in your sig, you will be good to go with a stock bin.

 

Your right, engine details WOULD be helpful! Jasper is what is coming out due to a small freeze crack on side of block. Still runs great, so a real shame.

350 with Dart Iron Eagle Heads~9.0 compression
Comp Cams 08-502-8 Xtreme Energy. (one of their computer compatible cams, nothing extreme)

Set this up as a basic block, nothing outrageous and able to run on pump gas.

 

DIY PROM Do It Yourself PROM chip burning help. No PROM begging. No PROMs for sale. No commercial exchange. Not a referral service.

RBob.

 

Gearhead efi has a great write up on the batch and doing a starter binary.

 

My mistake. I've done plenty of my own chip programming on earlier projects, didn't think this was "begging," but looking for a starting point. Again, my apologies.

 

Thanks! I know the site well, was how I did the hardware mods to the 7427. Must have missed the part on setting up a starter bin, will dig back into it!

 

 

The easiest way to deal with the sense resistors is to solder a jumper across them. Use a heavy gauge (16 - 18) solid wire and place them on the bottom of the board. Be sure that they aren't too high as to touch the case.

RBob.

 

WJen I modded this ECU a couple years ago, I removed the resistors and soldered in solid wire. Hindsight, wish I had just jumpered the resistors as you suggested. End result the same, at least. They were a bear to remove!