FREE '7747 350 TBI Performance Timing Table

[dave w]

If you can program this timing table into your '7747 350 TBI, you will also need to reprogram the main fuel table. Well maybe it's not free after all???

dave w

 

[y5mgisi]

Speaking of which, I just picked up a 7747 computer from the junk yard the other day!

 

[eagle mark]

and still run regular unleaded?

 

[dave w]

and still run regular unleaded?

Yes, if you have a static compression ratio no higher than 8.7:1.

dave w

 

[70jimmy]

man do I have a lot to learn! See under my screen name.

 

[mrdrinksalil]

is that the same one i'm running?

 

[lak2004]

what does it all mean? I really need to get some data logged so I can get a chip burned.

 

[mrdrinksalil]

It's your advance in degrees that the ECU controls given a specific MAP sensor reading and RPM.

 

[eagle mark]

Yes, if you have a static compression ratio no higher than 8.7:1.

dave w

How much can you add with premium unleaded? Just a round overall number from your experiance...

 

[dave w]

How much can you add with premium unleaded? Just a round overall number from your experiance...

I've not tried or ventured to figure out a premium unleaded timing table for the '7747. What I would first try, if I were to venture into a premium unleaded '7747 timing table, would be to start with the table I already posted and then advance the base distributor timing from ZERO degrees to TWO degrees. Advancing the base distributor timing TWO degrees is like adding TWO degrees advance to every cell in the timing table I posted.

The down side to advancing the base distributor TWO degrees is the engine start timing. Look at the timing table I posted; at low RPM and high Kpa the timing is low in numbers to help start an engine.

Personally I'm getting out of the '7747 ECM business. The '7747 is a good ECM, but the 93~95 GM Pickup TBI PCM is just as cheap as the '7747 but is much better because it's a faster processor and has more tuning ability!!!

BTW, I have a premium unleaded timing table for the 93~95 GM Pickup TBI PCM.

dave w

 

[dave w]

is that the same one i'm running?

Yes, it is.

 

[mrdrinksalil]

So far I like it but I've got more tuning to do.

 

[y5mgisi]

I wish i could tune!

 

[dave w]

I wish i could tune!

I'm across the river in Vancouver.

 

[y5mgisi]

No kidding? Maybe we should arrange a meeting? Not to give me fish but to teach me to fish as the saying goes. So I am not looking for a hand out on free work, as much as im looking for some one on one how too's. I have a laptop. But thats as far as i have gotten.

 

[y5mgisi]

I dont know if you have seen this thread yet?

http://coloradok5.com/forums/showthread.php?t=197207&page=3

 

[dave w]

No kidding? Maybe we should arrange a meeting? Not to give me fish but to teach me to fish as the saying goes. So I am not looking for a hand out on free work, as much as im looking for some one on one how too's. I have a laptop. But thats as far as i have gotten.

Download TunerPro into the laptop. Then sent me PM with an email address to send a tbi chip file to. Then the chip programming can begin.

dave w

 

[y5mgisi]

pm sent.

 

[Keitha]

Are you programing on TunerCat?

 

[dave w]

Are you programing on TunerCat?

Yes, I'm programming with TunerCats. If you want, I can post the same '7747 SBC 350 TBI performance timing table from TunerPro?

dave w