AJR Dyno Runs Questions

[claymore]

Originally Posted by DynamicFit

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)

[I Am Ray.]

Originally Posted by claymore

Dynamic Fit is RIGHT on target. Nothing to worry about AND making more power and better fuel economy. (N/A only)

And also demolishing the pistons and/or piston rings.
14.0 AFR's are lean as hell. Its what cars run when driving around not under any load.

And running lean doesnt always mean more power.

[cavie187]

Originally Posted by Mx6GT89

And also demolishing the pistons and/or piston rings.
14.0 AFR's are lean as hell. Its what cars run when driving around not under any load.

And running lean doesnt always mean more power.

I was going to say it, but i am sick of arguing.

[1WayFit]

What does all this mean? so I should remove my T1R test pipe or what? I don't want to destroy my car so early

[claymore]

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).

[claymore]

Originally Posted by 1WayFit

What does all this mean? so I should remove my T1R test pipe or what? I don't want to destroy my car so early

Get it tested as long as it's 13.7 or less under all conditions THAT IS FINE NO NEED TO REPLACE THE PIPE.

[I Am Ray.]

Originally Posted by claymore

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.

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?

[AJ PwR Jr.]

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.

[I Am Ray.]

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?

[AJ PwR Jr.]

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.

[claymore]

Gee that shut them up when AJ confirms the numbers.

And I know that all cars are different that's why I said:

"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)."

did you not understand that???

[1WayFit]

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.

[ericman20]

Yeah same question. If I run Fujita SRI/Stock Header, B-Pipe/Spoon N1 with a T1R testpipe, will I need a fuel management?

[claymore]

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.

[ericman20]

Bump.

Originally Posted by 1WayFit

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?

[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.

[ericman20]

Thanks for the reply!

[pepep]

Originally Posted by AJ PwR Jr.

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.


Thanks