If you MAF readings aren't changing from n/a to spray, your likely not picking up a good reading on spray. What should happen is comparable rpm ranges should should be a higher reading on the spray. What's happening is because the spray is much colder the heated MAF wire is reading temp/density (heated wire sends a voltage depending on temp and voltage is converted to selecting a diff pulse width for injector). So logging a n/a wot run and comparing to a wot spray run you should see maf extend into areas that n/a won't see. This higher MAF reading results in a higher injector pulse width being sent to injectors and thus a richer a/f. Sounds as if this may not be happening much. Check MAF wire for cleaness, and maybe a pic of nozzle placement? By just using your PE enrichment for added fuel, this will also cause n/a wot to go rich. Normally the PE is used for some minor area adjustments and not totally for spray added fuel.
I have my total timing at about 22*, so you may need to pull some at wot if kr hasn't gone away once the a/f is fattened up. There is a write up on how to pull timing on spray in my personal web in the links section.
Robert

 

I'm figuring this is just a band-aid until I put the larger injectors in... and learn more about the tuning/program. As for making it rich during a N/A run.. when the hell do you ever make a WOT run without the juice??? LOL. I'm a n2o-aholic now. (background sinister laugh.. 'MAX, PUSH THE BUTTON")
I know you can set up for w and w/o n2o. I just have to figure out how. For now, a little fat is good enough.
I can send you my scan file if you want to look at it. I'm sure I'm not speaking correctly nor interpreting it correctly.

 

LOL when you getting the fill station? Maybe we can get a group purchase going on some

I want a set of headers, but I am thinking the Fill Station is more cost effective...

 

Its all downhill from there Beer

 

Robert. My MAF reading peaks at 31 on NA, 37 on N2o. I think thats what you're talking about anyway.
As for the KR it was down from peaking at 7 (first stock run) to 3 on new PE settings. Now I've adjusted my spark advance table as per your write up. I'll have to get more juice and make some new logs. Should be getting down to near 0.

Dang.. all that almost sounded like I knew what the heck I was talking about. scary.. real scary.

 

Why not pull N/A and see if you still have KR? It will still need to go...

The MAF cal reference I made was only to say, that since they leave the factory with a generic MAF profile which is close (but will vary from car to car) that until your VE tuning is done, and then MAF calibration, that you won't hit your commanded AFR in the PE table. With that said, for now, a little fudging of numbers in the PE table to fatten up that mixture at WOT isn't a bad thing.

That Granatelli MAF is probably giving you more grief than you realize as well. They'd have you believe it's a bolt-on when in fact, it requires quite a bit of tuning to just get things back to close to where they came from the factory.

 

There is 0 KR on NA. -now anyway. As for the Granatelli, I really want to run some tests because it works so much better than the stock (with screen) when hitting the nitrous. I'd like to see why, and verify it.

 

Actually, imo, the aftermarket MAFs are junk. I would descreen the stocker and use it. Problematic is really the course with any of the aftermarket MAFs. You'll mostly see that stockers are used and no real reason to change. This may be your issue alltogether.
Robert

 

I'll get out the tools and rip out the screen. Come to think of it, I did have the stock maf in there when I did the 'dyno days' dyno run.. and had better numbers. Thought it was just cause I had the 150s in there.