Edit is on the way.
Ok, my average LTFT's are 9.4 on both banks. That means its constantly adding 9.4 percent more fuel...right?
I'm getting .69 degrees of KR at 5600rpm at the top of second gear, nothing..right?
My timing goes from 21 degrees at 3900rpm to about 13 degrees at 5800. Does this seem low? If so what causes it to be low? KR after I fill the tank taking it to a lower timing table?
My IAT's go from 104 to 133 on 101 degree ambient temps(run from 0-120mph WOT)ATI through intercooler. I thought this was really good for 8psi!
Also, my wideband says 12 to 1 AFR at 3900rpm and at about 4200rpm it dips to 10.5-11 to 1 all the way to 5800rpm. This is with stock injectors and the FMU.
I will be getting 42lb injectors and the 11lb pulley next and tuning with edit.
What do you guys think? I'm new to the tuning thing, so I'm just trying to gather some knowledge.

 

Also, how much power do you think the 10.5 to 1 AFR takes away?

 

that all sounds good to me, that KR is nothing, your timing is fine, you could try for a little more but i doubt you will get much before you see knock. where is your maf? before or after the blower?

i would bet that drop in a/f ratio at 4200 is that COT(cat over temp) feature, do you have cats? if not shut it off with edit. i remember seeing guys get over 10rwhp with the COT shut off, they were seeing a similar increase in fuel like you are, usualy didn't kick in till 2nd gear.

by having positive ltrims the computer is adding fuel because the 02's are saying it is a little lean. you will want to get those ltrims a little negative(dont worry about it till you pop in those new injectors) so they goto 0 at wot before you try and mess with your WOT tuning. if you dont know what i am talking about let me know and i will explain it a little better.

dont shut off COT if you have cats and if you can't shut of the COT it may make WOT tuning kind of tricky because it will be messing with your a/f ratio. best to dump the cats!!

sounds like you are geting set up for some serious tuning, i had alot of fun squezing all i could out of my truck and you have the tools to do it now. just make little steps and watch that KR(and listen)!!!

 

1-My maf is after the blower

2-No I don't have cats...interesting you mention that, when i took off the cats I lost 3 tenths and 2mph in the quarter! So with the COT, do the rear o2's see excess heat and richen to compensate?

3-Thanks man!

 

1- wow, intercoolers are BAD ***!!! 133deg air on a 100+ day at 8psi

2- shut off that COT, it will probably get rid of that drop in A/F ratio. not sure why you lost power dumping the cats though, i don't think dumping the cats effects the 02's, sounds like you didn't get any simm's for the back, maybe there is some kind of default tune because of the code you must have got.

anyways, who cares, some of your steps now are.

turn off COT
toss in those injectors
adjust injector flow to achive slightly negative ltrims
adjust your WOT enrichment with the PE vs RPM table to desired a/f ratio
always watch for KR, log, log, log

i wouldn't mess with timing till you see if you can get that 11psi pully to work, if you can get it to work without any KR then you can try bumping it up a hair.

what about a gtech, are you loging your results? oh yea, was it hotter after you ran it with the cats off than, i am talking about the weather, maybe that was why you ran slower?

 

2- does COT kick in because you remove the cats? I looked at my wideband log and it didn't dump the AFR until 2nd gear, just like you said COT does.Right now I have ed wright tuning with the rear o2's shut off.

3- I have a g-tech, but those results were from track runs

4- interesting thing-i took off the cats and installed a yank 3000 at the same time so I lost 2mph and 3 tenths with both mods!But gained 2 tenths in 60 foot time. So I really lost some power somewhere. Weather was a factor since cars were running 3 tenths slower than usual on that particular day. Still seems like I should've run at least the same et as before with the 3000 stall though.

 

COT would kick in with or without cats, it is a feature that richens up the mixture to keep your cats from melting, not sure what turns it on but it is easy to disable with edit.

i be the extra heat got you into some KR, you will loose ALOT of power if it is seeing KR, at one time i was seeing 0deg of timeing with 8deg of KR so a total or -8deg of timing.

something to keep in mind when you tune, try and tune in the hotest weather that you think you might race in(not drive it). if you get a nats *** tune on a 80deg day and then try and race when it is 90deg it wont work. i didn't worry about a little KR when i was just driving like in the middle of a 100deg day but i didn't want any when i was racing and i didn't even try and push it if it was over 80deg since that is what i tuned at.

 

Yeah, probably just the heat and the DA was like 7000ft.(the tracks at 4400 though, so it's never ideal for going fast. LS1 f-bods only go 14.5 or so here.

Hey, reading on another post it looks like Radix IAT's are 150-160 on 100 degree days! I can't brag about low-end boost(wish I could), but hey look at my IAT's!