R-Tech Customers cars and power graph gallery

[RTechUK]

its actually 70mm,  I was measuring the square filter end which goes into airbox.  (that side is slightly bigger.

so the VR6 MAF is 28% larger.

I think when I worked it out it came to 28%.

[golf-sib]

I just worked it out using 62mm and 70mm and I got 28% 

[Chris.]

Well working on a 28% increase we get



Suprised suprise....near enough exactly what the dyno says!

[golf-sib]

so for the people not so talented with equations.

3" maf with suited injectors = more power than vr6 maf with suited injectors?

3" maf = vr6 maf 

[golf-sib]

3" ID maf won't gain anything over a 2.75" ID in this scenario, only reason you upgrade the MAF size is to allow more airmass (g/sec) to be considered. Once the MAF is maxed out in its limit, you upgrade the size to consider more airmass into the equation.

[RTechUK]

In the map software the peak stock maf flow 0-5v scale works out at 673kghr which works out at 186.9444gs or around 240bhp on a dyno reading.
 The bigger maf is used to rescale the whole map to allow for a greater scope for performance, at the same time is the correct sized injectors are used to match the maf % gain then global constant for injection on tiime vs air flow will be correct, which makes the mapping easy by just rescaling the the load axis on the timing maps.  It only on the AGU we need to work this way.

[RTechUK]

3" ID maf won't gain anything over a 2.75" ID in this scenario, only reason you upgrade the MAF size is to allow more airmass (g/sec) to be considered. Once the MAF is maxed out in its limit, you upgrade the size to consider more airmass into the equation.

+1  Bang on again.

[golf-sib]

3" ID maf won't gain anything over a 2.75" ID in this scenario, only reason you upgrade the MAF size is to allow more airmass (g/sec) to be considered. Once the MAF is maxed out in its limit, you upgrade the size to consider more airmass into the equation.

+1  Bang on again.

Care to take me on as an apprentice  Honestly I'll sell the house and the misses and move up northish, any chance of a reply to the earlier message 

[RTechUK]

3" ID maf won't gain anything over a 2.75" ID in this scenario, only reason you upgrade the MAF size is to allow more airmass (g/sec) to be considered. Once the MAF is maxed out in its limit, you upgrade the size to consider more airmass into the equation.

+1  Bang on again.

Care to take me on as an apprentice  Honestly I'll sell the house and the misses and move up northish, any chance of a reply to the earlier message 

I would love to, maybe when we get the bigger workshop sorted, as we have two rolling road on site so room for another tuner.
 You remind me of me in my early days being so keen.

[golf-sib]

Only 22, so still a lot to learn, keep me in mind for that future idea though