Quote:
Originally Posted by mattles
I dont think this line of logic is 100% sound.
The Visconti tune was created in the North East US (as far as I know) and was made to work with a completely stock car to maximize power gains across the rev range.
The AIRAID intake was created and tested in the South West US and was made to work with the stock ECU/MAF to maximize airflow (to a point). The intake has the restriction of only being tested with the stock tune.
There are too many variables (MAF placement, CFM at the MAF, intake tube diameter/length, ambient temp, air pressure, differences in gasoline) to say that without a doubt *ANY* intake that works with the stock tune will work with the Visconti tune.
Im willing to bet that any intake which changes the flow the MAF sees will have problems with any generic tune that is not specifically designed to work with that intake.
I have more thoughts to post on this that I will work out in my head and post tonight when Im out of work.
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This is all very basic stuff. The MAF works off airflow... 0 - 5 volts. The ecu has a table that basically tells the motor how much injector open time (fuel) to provide to the motor based on a certain voltage.
If the intake in question is designed for a stock car ( meaning the diameter where the MAF sits the same as stock ) then nothing will need to be changed in the ECU.
Ideally installing a aftermarket intake that was designed for a stock car (stock diameter) will make the car breath better. This would result in more airflow - the ecu is already calibrated for more airflow than it can produce stock ( non-turbocharged). Basically nothing will need to be changed.
Some aftermarket company's who sell intakes change the diameter of the intake to change the Air Fuel mixture - This normally will result in a HP increase... But from everything I'm reading this intake's maf sensor is placed in a pipe that has the same diameter as stock.
My flash -
I have beta testers , East Coast, West Coast, 91octane, 93 octane.
I'm willing to bet I have more tuned BRZs then cars with this intake system installed.
This isn't the point of all of this - no one is pointing fingers.
We are just trying to figure out whats going on.
I'm offering data that people with out a EcuTek cable can not provide.
I think it's fair to say I have more data on this subject more than anyone in this thread. Not to mention I have someone with another aftermarket intake having the same problem. Both Tuned and Not Tuned.
Most of the people aren't coming in here saying they're having a problem with my tune and this intake - they are saying they are having a problem with the intake.
I think that it's a major turn off that you guys continue to delete posts and make it seem like we're hating on your product.
-John