air fuel question

[dinicola999]

just installed my wideband and at WOT i maxed the gauge rich 10 then it creeps to about 10.5 is this too rich, i know if im too rich im loosin power, didnt know if the unichip tune could be messed

[kamon8404]

Yes thats too rich.

[KrayzieFox]

What's an optimal afr at WOT?

[kamon8404]

11.3 to 12.2 to stay reliable.

[KrayzieFox]

Cool, thanks. I gotta figure out what's wrong with my setup.. I get up to 13.5-ish and it's starting to worry me.

[kamon8404]

Cool, thanks. I gotta figure out what's wrong with my setup.. I get up to 13.5-ish and it's starting to worry me.

You need a better tune. I would try to stay around 11.5.

[KrayzieFox]

Yea, I'm doing some research on what would work good with my crap automatic. It's what I get for going turbomatic I guess..

[kamon8404]

Yea, I'm doing some research on what would work good with my crap automatic. It's what I get for going turbomatic I guess..

Why wouldnt the SS AFC work? Are you using the msp ecu? What turbo setup are you running?

[KrayzieFox]

Can't use the MSP, I'm automatic. I'm looking into the SS, and I think I might give it a try.

I'm currently using the Flyin Miata voltage clamp and BEGi FMU.

[bazooka joe]

you should be able to adj the fmu to get your desired afr. at wot i'm at 11.3 (i have the same exact set up) it also sounds like your clamp may not be "clamping" what happens as you enter boost to your afr?

[KrayzieFox]

Right before boost (-3 Hg vacuum or so) they go down to 10.0-10.2 and stay there until about 3 psi. It's when I open up the throttle that they climb back up to 13's and sometimes even 14!!

So if I'm boosting, I make sure I don't hit the gas all the way.. cuz then it's fine. They stay in the 11's and 12's that way.


P.S.: Sorry for the threadjack dinicola999. The info is somewhat relevant, but I can make my own thread if this bothers you.

[slo03.5msp]

11.7-12.5

[Rush]

I'd even go a little conservative and keep it in the 11s. This is the MSP that we're talking about -- so if you're on the stock block, I'd keep the tune slightly rich. I'd rather lose out on a few horses and keep my rods in one piece.

[slo03.5msp]

From what i have found with tuning is that these motors actually like to be a bit on the leaner side. 11.7 and up with a max at about 12.2-12.5. These cars seem to be happy there. You can feel a huge difference in the pull at that afr over being a little richer. They fuel bog really bad at under 11, it's kind of a fine line. It is also a little about how big your balls are I guess.

[Knox Joe]

Mine runs AFRs of 10's and below, and runs like a raped ape. (shrug)

[shane02pro5]

Try bumping it to 11.8-12.2 and report back with the HUGE difference.

After putting in my walbro pump I was seeing 10.02 as the low at 20psi and it didn't even feel close to what 12+/- did! Had to be at least 30whp difference!

[slo03.5msp]

+1 On that at least someone agrees with me.

[ispecht]

Did you calibrate your wide band controller correctly, Is the fuel type and output correct on your wide band controller, I know on mine I had to plug it into the PC with a serial cable(serial-to-usb) to configure it (the black rectangle box). Just a thought, could never hurt to check.

[Knox Joe]

Try bumping it to 11.8-12.2 and report back with the HUGE difference.

After putting in my walbro pump I was seeing 10.02 as the low at 20psi and it didn't even feel close to what 12+/- did! Had to be at least 30whp difference!

I'm getting a stand alone for christmas, so I'm gonna wait till then to tune it. My mechanic said he wants to do mid 11's.

[slo03.5msp]

That's weak your tuner doesn't know shit!!

[shane02pro5]

I think that's a safe spot for a stock motor.

[slo03.5msp]

I am stock!!!

[shane02pro5]

Yes, but as I have read your balls are bigger than many wallets can afford to have! I can monitor my limits with my J&S and have a built motor. As a matter of fact there's a J&S for sale in the FS section!

[Knox Joe]

^^^^^^^
eggs zack aree

Don't want to snap a rod.

Leaning it out to 12's is not going to be that noticeable from 11's. Trust me, I know, I tuned this thing on a SSAFC myself, and played with AFRs.

I switched to the Unichip, from the SSAFC, for timing control, cause I'm running alcohol, but now the tuner here won't buy the software update from Unichip, so I am going with a new tuner, and a Microtech, or Haltech.

[Knox Joe]

That's weak your tuner doesn't know shit!!

I think I know enough, buddy.

[slo03.5msp]

You know enough that your afr's blow and your leaving about 30whp in your tune. Yeah i'd let you tune my car when hell freezes over. I bet you hard money I could put down more at 12lbs of boost than you could at 14 with water/meth inj on that shit ass tune. I'll laugh when you blow your shit up when you get a standalone. I love people that think they know what they are doing.

[slo03.5msp]

BTW I never said I don't have a j&s or turbo xs knock light. you can't assume these things. I monitor it all. I just know these motors really can take a beating.

[shane02pro5]

No need to act like an ass! Some people on these boards have seen more than you and being safe is more important than pushing the limits to get a bit more power.

So do you have a J&S or knocklight or an egt?

What is this fastnfurious.com?

[shane02pro5]

By the way 30whp was just a reference and I'm at 20psi and well over 300whp!

Less boost with a smaller turbo will not be nearly as significant of a difference.

You need to get out of here with your "I love people that think they know what they are doing" crap! Doesn't matter if you've been working on cars for 6months or 20yrs...we're all here to share information!

[KrayzieFox]

..I just know these motors really can take a beating.
I dunno what car you're driving buddy, but the FS-DE is far from durable. Reliable yes, but it can't take a beating for shit. Now if you were talking about a stock Supra or DSM engine, that's a different story. THOSE are durable engines..

[Knox Joe]

You know enough that your afr's blow and your leaving about 30whp in your tune. Yeah i'd let you tune my car when hell freezes over. I bet you hard money I could put down more at 12lbs of boost than you could at 14 with water/meth inj on that shit ass tune. I'll laugh when you blow your shit up when you get a standalone. I love people that think they know what they are doing.

(braindead




You'll be the one blowing shit up, if you really think how you post, homeboy.(second)


I seriously doubt you know wtf you're talking about. I have leaned the car out, and the minimal perceived gain is not worth having it leaner. Dude, I have done set ups never tried before by anyone on here, have you?

Maybe you should learn who you're talking to before you run your mouth, cause you're not looking to good. You have two people here, with a good amount of experience, telling you leaning it out isn't worth it. It's okay though, cause you'll be gone from this site soon, or posting about building your forged motor, if you think 12's are good.

Oh, and if your car is faster than mine, I would be very suprised. Let's see your mod list, that will settle this. Oh, and so you know, we've switched to straight alcohol. No point in running water.

[Knox Joe]

Wait, I just went back in some threads. You already broke your engine, smart guy! Who the eff is gonna listen to you?!?!?!

This is getting funnier and funnier.

You blow your motor, then try to give people advice, based on your experience? LMFAO!!!!!!

[slo03.5msp]

Dude I craked ring landings because I over revved it. Not because of my set up. I know your so smart you have been playing with your protege for so many years. Congrats, this is a bullshit car to me that is fun to road race with. I have had my share of 1,000hp supras and 800 whp mustangs. I am done with those with the state of the economy and the price of gas. I used to work at a shop in arizona called all mustang performance, amp performance to anyone that likes to look at mm&ff. Doesn't matter useless argument. BTW I have been here longer than you and seen more shit. So if you ever see a hole in the side of my block you are more than welcome to say I told you so because when I see one in the side of yours i'll do the same.

[Knox Joe]

I've over revved my car plenty of times, and nothing has broken. (shrug) Maybe not 7400 rpm, but mine is still fine, with my super rich AFRs.

Like I said, I'll shoot for 11.5's.

[Patrickenator]

quit. this started out as constructive.