After driving 250+km and half a tank of 91 octane, my CEL was off when i started my car after work. didnt get a chance to get with the reader so im guessing the 91 octane worked?

 

I'm glad your CEL is off but I don't think we should have to run 91 just to have this intake. I like the intake but don't want to be forced to run 91.

 

yea...although i have aftermarket products on my car as well, i didn't buy my fit to fill up with higher octane lol. i'm sure that filling 91 octane from now on is not a good permanent solution to the CEL, if it's even a solution at all

 

People that spend big bucks on performance parts and are too damned cheap to spend money on the fuel that is required to benefit from the performance modifications really confuse me as to why they would bother with modifications at all.

 

On one of our customer, CEL code P0171 **system too lean bank 1** but after premium fuel, the CEL went away.

On my GE, I am running 94octane so I will switch to regular and see what happens.

We are still working on a fix for this problem. We will try to make some adjustment to the MAF sensor to see if the CEL will be off permanently.

Will get back to you guys as soon as I get some results.

 

I'm not saying I *wont* run 91 octane...I just don't want to be *forced* to do so...especially not on a daily basis. There have been times I am on a trip or times get tough, need a few bucks of gas, etc and don't want/need 91.

 

i don't see myself spending big bucks in the first place on my 'near' $20,000 vehicle. it is neither a show car or race car. i also do not see too much of a difference in performance in filling up 91 over 87, if i only have an intake and exhaust - (just an example). some people just want the simple, bolt on, easy stuff, but that shouldn't mean they need premium fuel for the rest of the car's life

 

You shouldn't see any performance gain by filling up with 91. The only difference between the common tiers (87, 89, 91 & 93) of gasoline are their resistance to detonation. A low compression engine like the one in the Fit will not require anything other than 87. All the boltons in the world won't even require 89. You would have to go FI, or bump up the compression ratio to warrant the need for a higher octane.

 

I don't know where a person would get the idea that 10.4:1 is a low compression ratio. If you want to use the lowest recommended octane fuel that can be used in your car go ahead and buy 87 octane but there are very few countries where that fuel grade is even available and if it was to become available very few people would want to use it in their car and continue to use the 97 octane that is in some cases available in Asia and Europe... If I was to believe that spending money on a better grade of fuel there is no way that I could justify the cost of expensive high performance parts and be satisfied with driving a car with no engine modifications at all.... The ECU in the Fit will adjust to run at its optimal for any lead free gasoline octane rating being sold in the world as long as it is no lower than 87....Your car will run a richer mixture and less timing advance on 87 octane than with a higher octane....If you have a light foot you would probably never realize a change in performance from higher octane or expensive performance intake and exhaust parts anyway.

 

I've ran 87 octane and I got the CEL. I then ran 94 (highest available in Ontario) 2 full tanks and still had the CEL come on every other day. I do have the T1R axleback as well but still no luck with it.

Engine code on all these tanks are System running too lean.

help please

 

i really think this problem is a leaking MAF. try installing the MAF then put some electrical tape around where the sensor and the pipe meet.

 

ohh don't even worry about that directional crap.. because if you did that it makes a loud whistling sound if its on backwards.

 

car wont run at all with a backwards MAF. and it only fits on way. leaking MAF causes a cel

 

Holy crap!!! Totally didn't expect that much ratio from this engine... I thought it was somewhere around 9:1... My friend who's been working with Hondas for past 10 yrs is shocked as hell too... Well if that's the case then I'm filling up with 93 all the time!!! Thanks a lot for that info!!!

 

I'm still having problems with the CEL

 

Everyone has gotten the CEL fixed but me???

 

my CEL is fixed i put 91 and the i did the tape thing but....

my eco box runs on prems

its only another 6 bux per tank

 

If 91 octane only work for me but even then I don't see why we would have to use 91 octane for these bolt on. Don't get me wrong with our Fits 91 octane is like you said another 6 bux or so but it's the principle and stupid Gov't and their HST 8% extra for gas now

 

Maybe AJR will find aNother solution? Still undecided whether I want to keep filling up with 91 octane or just make my own intake with the cut out maf tube and run regular.

 

Well for what it's worth, if the code it's throwing is indeed that it's too lean, it's a good bet that the intake is indeed working very well . . . enough extra air getting into the engine that it's throwing the ECU in a tizzy. Just too bad the computer isn't able to handle it. I wonder if a simple electrical mod to the MAF signal would do the trick - start with adding an additional 1% of fuel across the board, and see what happens.