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13.7 to 13.9 AFR is pretty damn safe in my opinion, in fact you probably are making even better power than most of us if you are running an AFR close to that on a naturally aspirated motor. 12.0 A/F is something you might want if you are running a turbo or other F/I, but as you are only N/A even 13.9 A/F is pretty reasonable considering ideal combustion is 14.7.
Your motor is fine.
Dynamic Fit is RIGHT on target. Nothing to worry about AND making more power and better fuel economy. (N/A only)
There was no mention of 14+ readings ( where did you come up with 14+ readings ?????) 13.7 IS FINE (under all conditions) and WILL NOT DAMAGE INTERNAL PARTS INCLUDING PISTONS, PISTON RINGS, OR PISTON RING LANDS running N/A.
Running the CORRECT A/F ratio will always make more power than an INCORRECT one. The correct one is the closest to 14.7 (perfect) without detonation or preignition under all conditions load or no load ALWAYS (running N/A).
There was no mention of 14+ readings ( where did you come up with 14+ readings ?????) 13.7 IS FINE (under all conditions) and WILL NOT DAMAGE INTERNAL PARTS INCLUDING PISTONS, PISTON RINGS, OR PISTON RING LANDS running N/A.
Where did you get 14.0+ AFR's? I simply said 14.0 AFR's. Nothing higher. When I mentioned anything higher I was comparing how high the AFR's were under load as to what cars run when NOT under load.
And 13.7 and 14.0 isnt a big difference. Either way its damn close to 14.0 AFR's.
Quote:
Originally Posted by claymore
The correct one is the closest to 14.7 (perfect) without detonation or preignition under all conditions load or no load ALWAYS (running N/A).
Every car is different. Some detonate sooner than others. How do you know this is correct with the Fit?
The AFR number that I was mentioning were based on with all T1R parts installed so lets say , if you have stock header, bpipe and intake , the test pipe alone will lean it down a bit to give it some more power.
13.7~13.9 is a very safe AFR but the fact, the L15A engine stopped to make power after 13.5.
I think most of you didnt realized that when the stock Fit on partial throttle, the AFR is at 14~15 range so with the mods, there's nothing to worry about ruining the engine unless detonation.
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--------------------------------------------- A&J Racing International #155-1991 Savage Rd Richmond B.C. V6V 0A4 TEL: (604)279-0329 Email: info@aj-racing.com URL: www.aj-racing.com Your JDM parts and Honda Tuning Specialist
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So with the cat-delete, I/H/E the fit lost power than due to the leanness?
I want a header, but not if Im going to loose power. And I want the T1R header.
I still want a tune also. Maybe adding the header and a tune will gain a good amount?
Every different manufacturers got different designs for their own exhaust so AFR reading will nto be the same but if you run full T1R, fuel management is recommended with the test pipe.
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--------------------------------------------- A&J Racing International #155-1991 Savage Rd Richmond B.C. V6V 0A4 TEL: (604)279-0329 Email: info@aj-racing.com URL: www.aj-racing.com Your JDM parts and Honda Tuning Specialist
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Right as of now, I run my fit with the t1r intake, t1r test pipe, t1r bpipe, t1r 50s.. and stock header. The car runs quite lean assuming a lot of power made. But do I need a fuel management? I use #87 and have no clue on AFR. But it should be pretty damn high.
No to both fuel management questions. You both should be fine with the parts you have installed. If you are that worried (over nothing) get your A/F ratio checked or try "reading" your spark plugs for signs of leaning out.
Right as of now, I run my fit with the t1r intake, t1r test pipe, t1r bpipe, t1r 50s.. and stock header. The car runs quite lean assuming a lot of power made. But do I need a fuel management? I use #87 and have no clue on AFR. But it should be pretty damn high.
I'm wanting an answer for this question too, I'm running
T1R Testpipe/T1R B-Pipe/Spoon N1, and soon to be with T1R Response Header.
Will we need fuel management? Will Greddy E-Manage Blue work out for tuning this setup?
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2008 Honda Fit Sport - Sold
1999 Honda Civic SiR - R.I.P
1992 Honda Civic CX - DD/Track - D16Z6-T
It is always nice to have fuel management to fine tune the setup that you have on the car. With I/H/E + TP, it is not lean enough to cause any detonation to cause any damage to your car.
__________________
--------------------------------------------- A&J Racing International #155-1991 Savage Rd Richmond B.C. V6V 0A4 TEL: (604)279-0329 Email: info@aj-racing.com URL: www.aj-racing.com Your JDM parts and Honda Tuning Specialist
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The AFR number that I was mentioning were based on with all T1R parts installed so lets say , if you have stock header, bpipe and intake , the test pipe alone will lean it down a bit to give it some more power.
13.7~13.9 is a very safe AFR but the fact, the L15A engine stopped to make power after 13.5.
I think most of you didnt realized that when the stock Fit on partial throttle, the AFR is at 14~15 range so with the mods, there's nothing to worry about ruining the engine unless detonation.
does the af ratio in partial throttle differ from the af ratio in WOT?
why is 14 considered lean? I always thought that running lean is above 14.7. please enlighten me.
"the test pipe alone will lean it down a bit to give it some more power." - i also thought that running lean is for better fuel economy and not power.
please forgive me for my noob questions. I'm new to this topic. my mods are: T1R intake, 5zigen headers, 2inch header back exhaust w/ resonator and spoon axle back. No cat converter.
Oh and by the way, Jason was very helpful and accommodating during my purchase of the intake. he painstakingly answered all my questions. excellent service guys.
i have the T1R response headers, T1R test-pipe, Spoon B-pipe, and Spoon N1 axle back. Will it gain some hp with the test-pipe, or as some may said it will actually lose hp.
btw what fuel management system would you recommend. please advice
Quote:
Originally Posted by AJ PwR Jr.
It is always nice to have fuel management to fine tune the setup that you have on the car. With I/H/E + TP, it is not lean enough to cause any detonation to cause any damage to your car.
Linear Mode
