yeah i had the problem with UR intake after we attempted to get my ralliart tuned, we could not get anything that would wow me.. The car ran lean as hell, we were almost running out of gas.
see for yourself ** i went and took my UR sri off and put my stock airbox back on.. i did order a k & n drop in filter.. https://img6.imageshack.us/img6/2476/uu002.jpg |
Originally Posted by Jake26
(Post 7321591)
yeah i had the problem with UR intake after we attempted to get my ralliart tuned, we could not get anything that would wow me.. The car ran lean as hell, we were almost running out of gas.
see for yourself ** i went and took my UR sri off and put my stock airbox back on.. i did order a k & n drop in filter.. What the tuner needs to do is adjust the injector latency to overcome this problem. I tuned an Evo X today that had an AEM intake and the LTFT were +10.9%. I adjusted the trims and brought them down to +4%. Then I tuned the car. I ran the stock fuel map and the car ran at 11:1 AFR. I could not believe it. I simply touched up the fuel map and got the AFR to 11.5:1. That is all I did to the fuel map. Tuners must adjust the injector latency on these cars BEFORE they tune the fuel map. That takes a lot of time. It took me ONE hour of logging the trims at idle and cruise to get them stable before I started tuning. If the trims are not stable, then the AFR will fluctuate as the trims change. |
Its not the intake that is the problem, it is the maf housing size.
|
Originally Posted by TTP Engineering
(Post 7321868)
Its not the intake that is the problem, it is the maf housing size.
That changes the airflow and tuners MUST adjust the MAF scaling to fix the problem. Since there is no MAF scaling table in ECUflash yet, then the next best thing is to adjust the latency. If a tuner does not do that, then the result is 7.4:1 AFR targets in the fuel map. |
Originally Posted by nj1266
(Post 7322193)
The MAF housing on a hotwire MAF is part of the intake. Unlike the Evo 8/9 that has its own MAF housing that is attached to the intake pipe, the Evo X does not have that. The housing is part of the intake. When an intake is installed the hotwire is removed from the stock tube/housing and placed in the metal tube in a CNC machined hole that is part of the intake.
That changes the airflow and tuners MUST adjust the MAF scaling to fix the problem. Since there is no MAF scaling table in ECUflash yet, then the next best thing is to adjust the latency. If a tuner does not do that, then the result is 7.4:1 AFR targets in the fuel map. We have not placed all intakes into a category together at this point until further testing can be completed on other manufacturers unit. |
Originally Posted by AutoMotoSports
(Post 7308298)
Just to clear the air as this thread is a little misleading.
In regards to AMS products and AMS PRODUCTS ONLY! On an EVO X you can run an AMS intake without a tune SAFELY! On a 2009 Ralliart you CANNOT run an AMS intake without a tune. They are two TOTALLY Different animals. Again the problem is with the RALLIART ONLY in regards to AMS PRODUCTS ONLY We cannot speak for any other intake on the market but we suspect that any intake for the ralliart that changes the diameter or anything to do with the MAF will cause a lean condition. Eric |
Originally Posted by gizmotoy
(Post 7322240)
I saw this when it was briefly over on the X forum, so thought I should chime in. I have an Evo X with an AMS intake, and got tuned this weekend. Low in the RPM band on the stock tune I was almost off-the-chart lean (14+ AFR). Who knows if I have any permanent damage (I ran like that for several months because AMS said it was safe), but I would advise thinking twice about installing any intake that alters the MAF housing size without immediately getting a custom tune. That goes for the RA or the X.
AMS said it was safe because it is, they even say their Ralliart one needs to be tuned, they know what they are doing. |
Originally Posted by murlo26
(Post 7323967)
Something else was wrong with your car then, its not the AMS intake. I just posted up a dyno of my AFR with stock tune and AMS intake, it was still way rich, as in 9's.
AMS said it was safe because it is, they even say their Ralliart one needs to be tuned, they know what they are doing. |
I guess I'll send AMS an email, then. I only have AMS's intake and their dual exhuast, so there's not a whole lot of room for other stuff to be wrong. I doubt it's the exhaust, so that leaves only the intake. I'll see what they say, though.
|
Originally Posted by gizmotoy
(Post 7322240)
I saw this when it was briefly over on the X forum, so thought I should chime in. I have an Evo X with an AMS intake, and got tuned this weekend. Low in the RPM band on the stock tune I was almost off-the-chart lean (14+ AFR). Who knows if I have any permanent damage (I ran like that for several months because AMS said it was safe), but I would advise thinking twice about installing any intake that alters the MAF housing size without immediately getting a custom tune. That goes for the RA or the X.
if you were running that lean for months you surely would have melted pistons by now and you would know it. Are you positive that your car is running 14+ afr at WOT? |
Originally Posted by def1
(Post 7324241)
if you were running that lean for months you surely would have melted pistons by now and you would know it. Are you positive that your car is running 14+ afr at WOT?
However, I do not have my own wideband gauge. This was on their equipment, so I cannot personally be certain, no. |
Okay so it looks like this isn't too safe. I'm 1000 miles away now though so no chance of a retune. How bad would it be for me to put the stock airbox back on and my WORKS filter back in? I will be running super rich right?
|
Originally Posted by xdemoulasx
(Post 7324633)
Okay so it looks like this isn't too safe. I'm 1000 miles away now though so no chance of a retune. How bad would it be for me to put the stock airbox back on and my WORKS filter back in? I will be running super rich right?
|
What about Injen's CAI. Has anyone bought it and taken it to then Dyno and check if it runs lean or not. It is supposed to be tuned from factory. Has anyone check this out?
|
Originally Posted by ReaperSevero
(Post 7326780)
What about Injen's CAI. Has anyone bought it and taken it to then Dyno and check if it runs lean or not. It is supposed to be tuned from factory. Has anyone check this out?
|
All times are GMT -7. The time now is 07:46 AM. |
© 2024 MH Sub I, LLC dba Internet Brands