Better off with Q45 Afm or Z32 Afm?
Posted 01 March 2012 - 05:59 AM
Cars will be running s15 injectors if not 550's, turbo is hks2510 so it's not huge power so will I even need the Afm? Ecu is a nistune
Any ideas or help would be great thanks
Posted 01 March 2012 - 06:47 AM
Posted 01 March 2012 - 07:59 AM
Posted 01 March 2012 - 09:34 AM
Posted 01 March 2012 - 09:58 AM
Posted 01 March 2012 - 06:34 PM
Posted 01 March 2012 - 06:48 PM
Posted 01 March 2012 - 06:55 PM
Q45 is 10mm bigger too so more of a pain too plumb and a bitch to tune.
Posted 03 March 2012 - 10:17 AM
Posted 03 March 2012 - 10:27 AM
I got an rb25 afm and it was easy to install and tuner said it was easy to.
Posted 03 March 2012 - 10:44 AM
For a car with fmic,manifold,disco potato,full exhaust would there be a need to upgrade the AFM?
Posted 03 March 2012 - 10:48 AM
(that's with S15 not sure if the redtop SR's lack more resoloution again)
Posted 03 March 2012 - 12:05 PM
Posted 03 March 2012 - 02:10 PM
I don't know how many people here have actually faced restrictions from the Z32 AFM, but I've never actually seen hard data to say if the Q45 sensor can read higher airflow, but people like to say bigger is better. Z32 is probably easier to replace if you ever have issues, so you don't have to worry about getting a retune if you ever have issues and can't find a replacement Q45.
Posted 13 March 2012 - 04:55 PM
The Q45 is also rated higher and will support ~100kw more than a Z32.
however due to it's large size don't expect a small diplacement engine to idle to well with an AFM that size as the intake charge velocity across the AFM will be very low.
Edited by D_Stirls, 13 March 2012 - 04:57 PM.
Posted 14 March 2012 - 10:56 AM
Absolute max that the ECU can read is 5.12V. So at 280rwkw the Q45 is approaching max. The engine tuned up great though, idled nicely and had generally good manners. Although with idle/low load stuff it often seems to come down more to positioning and how well the plumbing is done than the AFM itself.
Anyway, that puts the Z32 AFM miles ahead in terms of ability to measure more airflow despite being smaller dia in my book.
Posted 15 March 2012 - 05:58 AM
Posted 15 March 2012 - 09:53 AM
Posted 16 March 2012 - 04:46 AM
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