Good Air/Fuel Targets for Safe NA Horsepower
03-03-2008, 09:02 AM
#26
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I think you are confusing tools with tuners. I like to play with this stuff and like to learn from people that know (like Ben). It is also helpful to bounce ideas off others that have similar interests.
If you want someone to give you their answers then you belong with a tuner. I prefer to learn, hopefully in the company of those with similar interests.
If you want someone to give you their answers then you belong with a tuner. I prefer to learn, hopefully in the company of those with similar interests.
03-03-2008, 09:43 AM
#28
03-03-2008, 09:50 AM
#29
Momentum Keeps Me Going
we know that there are gains to be had leaning out the mixture from the OEM setting of around 11:1 to around 13:1 -that is well documented on this site . About 10hp is gained by doing this alone.
What the post from Kane says is that fine tuning your 13:1 does not yeild anything extra . As long you are within a certain range it matters very little .
What the post from Kane says is that fine tuning your 13:1 does not yeild anything extra . As long you are within a certain range it matters very little .
true, within a certain rough range 12:1 - 13:1 1/f, it matters little to power. EGT however, tend to be not so accomodating in the rotary, tend to go way up out of the 'normal' range compared to piston cars, which is really the rub for everyday driven cars w/cats.
03-05-2008, 10:25 AM
#30
I’ve asked around a bit and the consensus seems to be 13:1 for good normally aspirated horsepower while still being somewhat safe. The only caveat to that is that you need to watch your cat temps as they will climb if you run the car hard for long periods of time. I would suspect the extra heat might affect cat life as well but that is just a guess. This would tend to agree with the comment above.
Does this sound reasonable?
Does this sound reasonable?
03-05-2008, 03:58 PM
#32
I run somewhere between 13.7 and 13.3, my cat (Brain 200cpsi) is tested for >1200° so i'm not much worried about its temperatures.
The important thing is just to richent the mixture a bit at high rpms or the risk of blowing up will increase.
Just my 2 cents
The important thing is just to richent the mixture a bit at high rpms or the risk of blowing up will increase.
Just my 2 cents
03-06-2008, 06:03 AM
#34
Sorry for the inconvenient
03-06-2008, 06:08 AM
#35
03-06-2008, 06:15 AM
#36
Firmware number of what? I don't quite catch you! If you tell me what to do i'll do that.
1200° is the spec they have to meet in long flat out situations to achieve FIA homologation.
I'm going to put my car on a bridge to do some work, if you need any kind of pic just let me know.
1200° is the spec they have to meet in long flat out situations to achieve FIA homologation.
I'm going to put my car on a bridge to do some work, if you need any kind of pic just let me know.
03-06-2008, 11:31 AM
#38
I put the °, blame my country and not me if they say that ° stands for Celsius :D
By the way i think that with that cat lean A/F ratios won't be a real problem for the whole exhaust while they might damage the engine.
By the way i think that with that cat lean A/F ratios won't be a real problem for the whole exhaust while they might damage the engine.
03-06-2008, 11:58 AM
#39
"C" means Celsius. "F" means Fahrenheit. "°" just means degrees of either.
Just because you are Italian doesn't mean you get to be lazy.
It is important to note that the majority of the people on this forum live in a place where metric is NOT the standard.
03-06-2008, 12:05 PM
#40
Yes excuse me poor law student, i figured that out :p but writing in two languages at the same time, different things often drives you mad :D
I don't want to run OT though, again :D
I don't want to run OT though, again :D
03-06-2008, 12:16 PM
#41
As for law school, what is the Italian equivalent of the LSat exam? That test really fried my brain.
The firmware number can be had using a logging tool that records it or a scan tool that will display it. Either will plug into the OBDii port above your legs (as you sit in the car).
03-06-2008, 04:48 PM
#44
Your English is way better than my Italian will ever be. I worked in Ravenna for a while and just barely got to the point where I could feed myself. Thanks for posting!
As for law school, what is the Italian equivalent of the LSat exam? That test really fried my brain.
The firmware number can be had using a logging tool that records it or a scan tool that will display it. Either will plug into the OBDii port above your legs (as you sit in the car).
As for law school, what is the Italian equivalent of the LSat exam? That test really fried my brain.
The firmware number can be had using a logging tool that records it or a scan tool that will display it. Either will plug into the OBDii port above your legs (as you sit in the car).
As for the firmware i don't have a scanner right now but i'm buying one so i will give you everything you need when i have the tool.
03-06-2008, 08:10 PM
#45
Momentum Keeps Me Going
bse50 do you have a link to the Brain 200cpsi catalyzer? You know I've looked for one that will do what you say this does for years, no joke. I can't believe it actually exists. I'd really be amazed as I'm not sure what substrate material would be able to withstand those temps, esp over a long period.
03-07-2008, 07:11 AM
#47
Firmware number of what? I don't quite catch you! If you tell me what to do i'll do that.
1200° is the spec they have to meet in long flat out situations to achieve FIA homologation.
I'm going to put my car on a bridge to do some work, if you need any kind of pic just let me know.
1200° is the spec they have to meet in long flat out situations to achieve FIA homologation.
I'm going to put my car on a bridge to do some work, if you need any kind of pic just let me know.
Mate, you can tell the firmware (or calibration ID) from a Scan Tool as Lola suggests (such as sCANalyser
USB VERSION COMING SOON!), or if you pull the cover off your ECU housing (next to the battery) you will see a number like N3H6. From that, I (or anyone for that matter) can get the latest Calibration/Firmware.Pitty you got a hard time on the degrees thing. One simple explanation/clarification was all it took, but it still had to go on and on...
Sounds like a good cat. I've seen a Magnaflow "good for 600HP" 3 inch, umm 76mm one that shat itself.
Cheers,
Hymee.