sprayed306

I have been messing with a wideband a/f gauge latley and this may be a dumb question but is there any way to change the a/f ratio at WOT a littlew/o a tune?My a/f ratio if at 15.2 at wot,is this safe or not? i never see the gauge"aem" go in to the green.mod-306 h/c/i

WhiteWindsor

When samseed gets on here he'll be able to tell you all about it. He is my HERO.

sprayed306

Cool thats who i was hoping to hear from,also i have 24lb injectors and fuel press @42 vac off.Thanks!

ttocs

where is that guy when we need him. Can't we get him a pager er somethin???

samseed101

Hey, some of us need to work! LoL [8D]

Holy ****, 15.2 at WOT? That's lean... REAL lean. I'd stay off the throttle until you can fix this issue. First things first, what's your full mod list, right down to the fuel pump. Also, are you sure your gauge is accurate and are you sure the wideband is calibrated properly? What's the AFR at idle and under normal driving conditions?

Curlytop

i'm trying to remember back to when we tuned mine. i thinka/f ratio should be between 12.2 to 13 ideally. when we startedtuning minei was sitting at about 14.something.ithink that was running a little lean.can't be for certain my tune/dnyo sheets are in storage. i was thinking about leaving it there for the added hp gains and save on gas. however, wewent with the proper setting.right now, ijust can't be sure about the numbers its been a minute.

samseed101

Even 14.0 is lean for WOT. However, the desired ratio is going to depend on your mods. The hotter the air, the richer you want the mixture. For example, if you're running forced induction with no intercooler you may want an 11.5. If you have an intercooler you may want a 12.5. I can't think of many situations where you'd want 14.0 at WOT... well unless it's nice and cold outside plus you're running some good gas alonng with methanol injection. Then it may be okay

86GreenMachine

Would running 94 octane ,front mount intercooler ,and methanol injection be for 13-14.5??

sprayed306

Well not sure how accurate the gauge is or how to calibrate it but its a brand new AEM gauge with sensor mounted next to the factory o2.Mods.306 9.5 compresion,255lph FP,afr 185's,comp cam 555/565,elde rpm2 intake,24lb,inj,pmas 75mm,70mm tb,bbk afpr,headers,o/r h pipe,2 chamber flows,1.6 rr's,4 10'sand thats about it.At idle it jumps from 16.0-18.0+ and pegs the gauge and normal driving on the highway 2400 rpm@ 70mph it jumps around 15.9-17.0.I have checked codes,balance test and everything passed.

Curlytop

oh samseed is on his "A" game. i can't keep it on memory like that "bro". i'm a shedtree mech. show me something once and i'll have it down. i've been around fast cars my whole life. i can only talk about what i have experience. trail and error and plenty of error. however, this dude know his s##t.