A few weeks ago i was at West tunning to have some mapping done and asked Ray if we could test several different airbox set ups on the dyno before we did the mapping.
In an attempt to have a 'level playing field' all runs we done with the same starting oil temps and ambient air temps.
A big thank you to Imran for posting down his prototype simota for testing 8-)
Three set ups were tested;
Pipercross Viper (hybrid system similar to Lee's old one) and Active Autowerks heatshield
no pic but same as this;
K&N cone filter and AA heatshield;
Simota without AA heatshield;
no pic again but on Imrans car;
The Viper was tested first and whilst it gave good initial pick up it was not able to flow enough air at high rpm's. This was partly due to the connecting tubing constricting by up to an inch once revs exceeded 4000ish rpm :shock:
Next up was the K&N set up. This was bought from Dave.F who has had good results using this system in conjunction with his own design heatshield on e36 m3's. This certainly flow better at the top end of the rev range but suffered with slightly more heat ingress than the others.
Lastly up was the Simota. This had to be run without the AA heatshield as it wouldn't fit with it. The Simota produced very good gains(aprrox.6-9hp) throughout the whole rev range and was a clear improvement on the other two. Even without the AA heatshield the Simota didn't suffer from much heat ingress.
DYNO PLOT (Ignore the top run as that was after mapping with the Simota :twisted: )
Simota-purple
K&N-green
Viper-red
Whilst the results of this test are quite revealing they should not be treated as conclusive.
In an attempt to have a 'level playing field' all runs we done with the same starting oil temps and ambient air temps.
A big thank you to Imran for posting down his prototype simota for testing 8-)
Three set ups were tested;
Pipercross Viper (hybrid system similar to Lee's old one) and Active Autowerks heatshield
no pic but same as this;
K&N cone filter and AA heatshield;
Simota without AA heatshield;
no pic again but on Imrans car;
The Viper was tested first and whilst it gave good initial pick up it was not able to flow enough air at high rpm's. This was partly due to the connecting tubing constricting by up to an inch once revs exceeded 4000ish rpm :shock:
Next up was the K&N set up. This was bought from Dave.F who has had good results using this system in conjunction with his own design heatshield on e36 m3's. This certainly flow better at the top end of the rev range but suffered with slightly more heat ingress than the others.
Lastly up was the Simota. This had to be run without the AA heatshield as it wouldn't fit with it. The Simota produced very good gains(aprrox.6-9hp) throughout the whole rev range and was a clear improvement on the other two. Even without the AA heatshield the Simota didn't suffer from much heat ingress.
DYNO PLOT (Ignore the top run as that was after mapping with the Simota :twisted: )
Simota-purple
K&N-green
Viper-red
Whilst the results of this test are quite revealing they should not be treated as conclusive.
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