I've been running only 12psi with these holley 64# injectors and I was able to pull a 13.8 at 102mph....maybe there is something wrong with my fuel delivery under WOT . Time to crank up the pressure and retune my VE tables which BTW, are also all fubar. I'll make it simple for you guys that don't know anything about tuning the eprom. My fuel tables were flat from 3200rpm to max because my 2nd "adder" table was constant.

 

what language is that again?

 

Yeah, I'd say a constant flow rate above 3200 RPMS might be a problem Thats what I'm asuming you mean at least. I guess that constant should probably be some sort of variable I'm guessing? (ok so I had a intro to programming class a year ago, thats the best i can do!) I didn't know they used multiple tables that combine with each other.... eesh. Good thing I don't need to start messin with that stuff yet!

 

thats it .. too much computer stuff .. im going carb ...... j/k.

I need to learn this stuff actually for when I replace my engine. geez!

 

I think that deserves the bonehead of the day award!

Does this mean the very recent lack of fueling debate/theory has gone right out the window? Its sure looking that way... Maybe those who are thinking about that right now should READ this post....

 

I'm poor, what can I say...I had a tough enough time coughing up the $30 for this fuel pressure gauge .
Yes, pretty bonehead but at least I'm working on things. It's just tough being a full time ME student and working 30hours a week and THEN finding the time to do stuff with the car.
From dyno graphs of my engine it appears that this is hurting me a LOT. The engine makes peak torque around 4400rpm and if my engine is running a flat (most fuel at 3200 and constant up to redline) fuel table then there is something seriously wrong. I'm going to probably go ahead and get a vacuum AFPR if the price is right. I'd like to see around 20psi under high load and around 12 to 15psi under idle conditions and lower engine load.

 

Sounds like it could be a PITA to tune.

How is the vAFPR going to give more fuel above 3200 rpm? I would think if the engine was going full blast then it would be at 100 kPa and the vAFPR would just be dumping more fuel according to load. Couldn't you fix your problem by jacking up the values above 3200 RPM in the VE #2 table?

Maybe I'm missing the point, but I think I may have a similar problem that I would like to remedy.

 

30 bucks for a gauge? Theres an advantage to TBI... we wont ask what mine cost.

How about modifying a TPI regulator for lower pressure and use that? Its vacuum referenced...

I had an aftermarket one, cant remember the name. All it did was leak... at 5 psi Get a decent one.