Gabe's TT MAF sensor

[Akfahad]

Alright, I'm finally getting around to putting this on and actually went to the dyno shop today to get it put on and dyno'd right away. He had to leave just as we started, had an emergency, so didn't get it done today. But he asked me what the A/F mixture/ratio should be at since changing the MAF. I'm currently at 12.5:1 ratio and I always thought the MAF sensor just needed to be adjusted when you put it on. Is there a specific A/F ratio I should be running with this? His question kinda threw me for a loop.

[Astro]

Good question, maybe Gabe could answer this. I've been so busy, I still haven't dynoed my ride....ever I guess it hasn't been a priority with a little one, but I'd like to know for future reference.

[Paladin06Greg]

The A/F Ratio will vary depending on a lot ot variables. I would be concerned if someone being paid to tune my car asked me that question.

I'll be honest, my tuner and I fought with that MAF for months before I finally set it aside. My car runs much better without it.

[Akfahad]

^^hhmmmm...ok, well thanks Greg.

[crispone]

... I would be concerned if someone being paid to tune my car asked me that question....

I would "conditionally" disagree with that. On the CONTRARY, I would HOPE my tuner ask me what TARGET A/F ratio I wanted to be running at with my setup. Is not the purpose of TUNING to monitor your ACTUAL ratio values as achieved with varied air and fuel deliver manipulation through mapping, etc...?

Perhaps we have differing understandings of what the tuner was asking?


-crisp

[Paladin06Greg]

Chris - I base my comment on my position that I only pay someone to do what I am unable or unqualified to do. I believe your tuner with his experience and test equipment should be able to best determine what is the best for performance and "safe" A/F ratio for your engine. What you want and what is right to two different things. IMHO!!

... I would be concerned if someone being paid to tune my car asked me that question....

I would "conditionally" disagree with that. On the CONTRARY, I would HOPE my tuner ask me what TARGET A/F ratio I wanted to be running at with my setup. Is not the purpose of TUNING to monitor your ACTUAL ratio values as achieved with varied air and fuel deliver manipulation through mapping, etc...?

Perhaps we have differing understandings of what the tuner was asking?


-crisp

[trd4life]

Regardless of which MAF is on the car you still need to tune for the proper air fuel ratio, shoot for 12:1. Akfahad, the reason i started selling these kits was because the stock maf on my car was maxed out and couldnt properly measure in the increased airflow of the engine causing my car to lean out up top, so upping the fuel wit the safc was useless. After you put the supra maf on your car it will probably lean your car out quite a bit up top, you will need to add a bunch more fuel than with the safc to put you back into your target air fuel range.

let me know how it turns out. throw a couple gallons of race gas in the car before you dyno it wil help insure your knock sensors dont grenade.

[Paladin06Greg]

Not to doubt what you say TRD4Life but, I've got my stock MAF back on and I've got plenty of gas on the top end.

Welcome back to the real world.

[trd4life]

thanks greg. you still got those cams saved for me?

I was chatting with Gadget from URD he was telling me the s/c tacomas gain about 10hp JUST from installing the supra maf before doing fuel adjustments

[crispone]

Yeah, I see your point. At the same time, sounds like akfahad has a current reading of 12.5:1. trd4life recommended 12:1... and the ratio at differing "points" along your gain curve may need "specific" targets for keeping a better margin so as to achieve a deliberately "richer" area and then other points that you want to run "lean" by design... or maybe just a "steady" even A/F ration throughout... I would agree, I'd want any paid technician to understand these elements and be able to "encourage" or even "select" on his own what these values "SHOULD" be. I just thought it was "considerate" for a tuner to ask... that's all. (Some guys assume you are "clueless"... etc...)

Point noted... YOUR car certainly sounds pretty well dialed. It would be nice to hear it making a "pass". Got any clips of that?

-crisp

Chris - I base my comment on my position that I only pay someone to do what I am unable or unqualified to do. I believe your tuner with his experience and test equipment should be able to best determine what is the best for performance and "safe" A/F ratio for your engine. What you want and what is right to two different things. IMHO!!

... I would be concerned if someone being paid to tune my car asked me that question....

I would "conditionally" disagree with that. On the CONTRARY, I would HOPE my tuner ask me what TARGET A/F ratio I wanted to be running at with my setup. Is not the purpose of TUNING to monitor your ACTUAL ratio values as achieved with varied air and fuel deliver manipulation through mapping, etc...?

Perhaps we have differing understandings of what the tuner was asking?


-crisp

[Akfahad]

thanks for chimming in Gabe....I guess I'll see what the dyno pulls are like. I'm already at your ballpark figure (12:1). Just have to wait and see what the computer reads the pull at and adjust from there. We'll see how much more adjustment I'll need.

Crisp, don't know if you were referring to my car or Greg/Gabe's beast, but I'll be taking the camera/video when I do the pull.

[Paladin06Greg]

I think we all saying the same thing just in a different way.

No video of the drive by or launch yet. I spent the weekend helping my daughter to get ready for an interview in Chicago with Delta Airlines next Wednesday. Wish her luck.

Yeah, I see your point. At the same time, sounds like akfahad has a current reading of 12.5:1. trd4life recommended 12:1... and the ratio at differing "points" along your gain curve may need "specific" targets for keeping a better margin so as to achieve a deliberately "richer" area and then other points that you want to run "lean" by design... or maybe just a "steady" even A/F ration throughout... I would agree, I'd want any paid technician to understand these elements and be able to "encourage" or even "select" on his own what these values "SHOULD" be. I just thought it was "considerate" for a tuner to ask... that's all. (Some guys assume you are "clueless"... etc...)

Point noted... YOUR car certainly sounds pretty well dialed. It would be nice to hear it making a "pass". Got any clips of that?

-crisp

Chris - I base my comment on my position that I only pay someone to do what I am unable or unqualified to do. I believe your tuner with his experience and test equipment should be able to best determine what is the best for performance and "safe" A/F ratio for your engine. What you want and what is right to two different things. IMHO!!

... I would be concerned if someone being paid to tune my car asked me that question....

I would "conditionally" disagree with that. On the CONTRARY, I would HOPE my tuner ask me what TARGET A/F ratio I wanted to be running at with my setup. Is not the purpose of TUNING to monitor your ACTUAL ratio values as achieved with varied air and fuel deliver manipulation through mapping, etc...?

Perhaps we have differing understandings of what the tuner was asking?


-crisp

[Paladin06Greg]

Anyway, I got one if someone's interested.

[Paladin06Greg]

Yep, I almost threw them out but they are still in the garage.

thanks greg. you still got those cams saved for me?

I was chatting with Gadget from URD he was telling me the s/c tacomas gain about 10hp JUST from installing the supra maf before doing fuel adjustments

[Akfahad]

looking at re-wiring the MAF sensor this weekend, hopefully, and was looking at the directions more closely. I get how to take the wires out, but wanted to confirm which way to count 1-5 when re-wiring. With the MAF clip facing up towards you as your looking down on it, do you count from the left or from the right with the middle one being ping 3, obviously?