There is possibly a response benefit running a cone, but I'm not sure if it's just something you think rather than something that is really happening.
You can make a remap file that gives a big kick and feels stronger and faster, but a remap that feels slower can be 10% more powerful all over and get more torque sooner.
It sounds silly, but your senses can lie to you... I've done blind testing on customers before and often they want the 'inferior' remap because they think it's the faster one hehe.
That said, I'm not sure specifically on this issue.
You'd probably want to log throttle position and MAF flow rate at a high frequency (probably directly to a meter/logging gear, anything OBD would be too slow), and then plot the throttle vs MAF rate in tests from steady state > full throttle from varying rpms and stuff...
You'd probably see there if there was really any difference, or if a lot of it is just noise.
In my tests though, IAT soak stands out like a sore thumb. I only have to plug in the laptop and look at the ambient temp vs IAT and instantly know if they have tampered with the OEM airbox or fitted a cone.
So there may be plus sides to a cone, instant flow response, but the down-sides ARE visible and do impact the total power potential outright and possibly filtration issues will damage components long-term.
You also have to worry that the oily post-filter conditions might not be healthy for the MAF sensor.
I might have a go at logging the throttle vs MAF at some stage, but in my experience even if it were 50% better response (I've never felt it to be honest, but I'd happily get numbers to check), I still wouldn't want one due to the costs they incur which are obviously evident.
Each to their own though, it's just my 2p. When customers see the IAT logs vs a normal intake system they usually quickly go back to a standard air box!
Dave
The MAF values only really impact one map, and you can tweak the values in that map already. For any remap you ideally need to re-tune that map so in essence you correct for any MAF issues in doing that.
Dave
You can make a remap file that gives a big kick and feels stronger and faster, but a remap that feels slower can be 10% more powerful all over and get more torque sooner.
It sounds silly, but your senses can lie to you... I've done blind testing on customers before and often they want the 'inferior' remap because they think it's the faster one hehe.
That said, I'm not sure specifically on this issue.
You'd probably want to log throttle position and MAF flow rate at a high frequency (probably directly to a meter/logging gear, anything OBD would be too slow), and then plot the throttle vs MAF rate in tests from steady state > full throttle from varying rpms and stuff...
You'd probably see there if there was really any difference, or if a lot of it is just noise.
In my tests though, IAT soak stands out like a sore thumb. I only have to plug in the laptop and look at the ambient temp vs IAT and instantly know if they have tampered with the OEM airbox or fitted a cone.
So there may be plus sides to a cone, instant flow response, but the down-sides ARE visible and do impact the total power potential outright and possibly filtration issues will damage components long-term.
You also have to worry that the oily post-filter conditions might not be healthy for the MAF sensor.
I might have a go at logging the throttle vs MAF at some stage, but in my experience even if it were 50% better response (I've never felt it to be honest, but I'd happily get numbers to check), I still wouldn't want one due to the costs they incur which are obviously evident.
Each to their own though, it's just my 2p. When customers see the IAT logs vs a normal intake system they usually quickly go back to a standard air box!
Dave
(05-01-2013, 09:59 PM)Jonny81191 Wrote: With regards to the MAF, would it be possible to trick the ECU into thinking the MAF is giving a higher reading?
The MAF values only really impact one map, and you can tweak the values in that map already. For any remap you ideally need to re-tune that map so in essence you correct for any MAF issues in doing that.
Dave
