What is your WOT AFR?

[BlackGS]

This might only be a valid question for those with widebands, but I would be interested to know what actual AFR (not commanded) you like to have with your setup. List mods if not in sig.

I have been running 11.0-11.5 to keep KR away. I've tried increasing to 12.0, but always get significantly more KR.

[JerryH]

It more depends on boost and supercharge type (GenV is better than M90 and turbo is better than GenV), than almost anything else (cam, heads, and other things come into play, but less so).

Asking a near random question like this is not going to be valid for anything more than 1 car.

That said... 11.7-11.9 is where mine likes to site with the 3.4, 11.3-11.5 with the 3.2" pulley.

If yoiu don't mind, I did not participate in the survey.
Mods in sig.

[BlackGS]

It more depends on boost and supercharge type (GenV is better than M90 and turbo is better than GenV), than almost anything else (cam, heads, and other things come into play, but less so).

Asking a near random question like this is not going to be valid for anything more than 1 car.

That said... 11.7-11.9 is where mine likes to site with the 3.4, 11.3-11.5 with the 3.2" pulley.

If yoiu don't mind, I did not participate in the survey.
Mods in sig.

I think that's a good response, and probably the point of this poll. I have had so many people tell me I should be running 12.0-12.5 with an intercooler, and what I find is that general rules like that may not apply. So, I was interested to find if the general rules are applying to others here or not. And you make a valid point that boost should be noted. I run around 11psi.

[Perforator]

I run 11.2-11.4. Any higher and I get knock.

[BlackGS]

I run 11.2-11.4. Any higher and I get knock.

That's intercooled, right? How much boost do you see?

[Perforator]

Intercooled yes. In the winter it was quite high with the 2.8 on, over 14.7. I have the 3.0 on now and it's warmer. The last time I scanned I think I saw map values in the 180's.

[AkursedX]

When I got my car tuned a couple of weeks ago, I was around 11.5. Now that the weather is cooler, my AFR's have dropped to around 10.7.

I'm new and my interface is set to be delivered this Friday, then hopefully I can take a little more fuel out.

That's on a 3.0 pulley and SSIC, with a few other mods.

[johnh]

11.2 - 11.6 Non-intercooled.

[JerryH]

Thats strange. Becuase the weather has gotten cooler, it should have leaned it out more, not richened it more. It should have gone up numerically, not down.

I'd suspect something else happening in that tune.

[AkursedX]

Thats strange. Becuase the weather has gotten cooler, it should have leaned it out more, not richened it more. It should have gone up numerically, not down.

I'd suspect something else happening in that tune.

Well I should should be getting my HPTuners interface on Friday, I will then be able to pull my tune and show my scans. Hopefully I can get some advice on where to go.

Until then, I just keep running through the forums trying to absorb as much info as I can.

[Bandit gs]

11.7-11.9 cam and IC, i'm always afraid if that pump dies what might happen. I tend to run around there for a happy medium.

[JerryH]

No matter what the form of power adder is... on a daily driver, I think it is a wise idea that one should tune in such a manner that you can drive it easy (40% TP and less, perhaps?), without being anywhere close to damaging the engine. In this manner, should something go wrong... it won't cost you an engine.

[LNorton]

13.0 - 13.2, but I am N/A

[louvered97gtp]

On my 99GTP I ran 11.5 non intercooled with blips of Kr of no more than 2* on 3.0pulley with 13.5psi.

[00GTP]

I run 12-12.5 afr, 2.8 pulley, around 12.25-12.5 boost, SSIC, forged internals, 0 KR!!!! Looking to add timing and drop pulley REAL soon and back my afr down to 11.75 or so. We'll see.

[e85grandprix]

I use E85 and my car seems to be much happier with 11.9-12.3 afr. Thats on a 3.2 pulley, 23* of timing, no intercooler. About 13ish psi at the top. My nitrous map i run 10.2:1 until it sprays then it evens out to 12.2-12.5, thats with 16* of timing, same 3.2 pulley, and boost goes a little up because of the cold temperatures of nitrous to 14-15psi.

[PDXGTP]

11.7-11.9 cam and IC, i'm always afraid if that pump dies what might happen. I tend to run around there for a happy medium.

Had that happen.
My pump stopped running, because the relay died actually and I was at the track when it happened.
Cylinder head temp were up that night.
I learned two things that day, get a LED hooked up to the motor to make sure the IC cooling water pump is getting power at least and maybe runing and don't run platinum plugs at the track, they are grreat for the street driven daily driver.

I run a 2.8 SC pulley, S3 heads, XPZ cam, ZZP Gen 2 IC core, ported M90, tons of tweaks and other parts. = 11.6 afr with slight KR transitioning to PE.
I run the same with a splash of Torco with a 2.6 pulley = 11.6 afr with race gas I only see blips of KR during trans shifts but they are nominal.

[BlackGS]

After reading up about the CompuNurse monitoring setup, I think I am going to install that to keep tabs on the input and output temps of the I/C.

I have been dialing in my fuel right around 11.5 at the track, and it seems to be running the strongest there. If I get up to 11.8, the KR kicks in.

[e85grandprix]

After reading up about the CompuNurse monitoring setup, I think I am going to install that to keep tabs on the input and output temps of the I/C.

I have been dialing in my fuel right around 11.5 at the track, and it seems to be running the strongest there. If I get up to 11.8, the KR kicks in.

Is your time and mph current to this date? I'm just wondering because thats what i trap with my car (103-105) and i have way less mods kinda making me assume my tune is darn good. I know your car is heavier and all, but i'm just curious.

[BlackGS]

Is your time and mph current to this date? I'm just wondering because thats what i trap with my car (103-105) and i have way less mods kinda making me assume my tune is darn good. I know your car is heavier and all, but i'm just curious.

That time and trap was last year before rockers, ported s/c, northstar TB, and more importantly, before a good tune. I ran that time with 4* of KR and 11* of timing. I also ran that on street tires.

I went to the track twice this year, but I was having major boost problems (see other thread about that). I did trap 105+ but the times were no better. When I got the boost problem figured out, I got one run in after, but the ECT's were over 200*, so it ran a 13.5 and I went home. I'm going back soon with drag radials and I should get some much better numbers. I do run in full street trim. I need to try to lose some weight next time.