View Full Version : ITB Tuning
topfuelman
November 9th, 2007, 02:38 PM
Has anyone had experience with or know of someone who is running a successful Individual Throttle Bodies (8 of them), Mafless, SD tune on a Gen III PCM.
Any tips or contacts would be very much appreciated!
Trev
SSpdDmon
November 9th, 2007, 04:11 PM
Itb?
topfuelman
November 9th, 2007, 04:16 PM
Itb?
Expanded on in original post. Thanks!
Trev
joecar
November 9th, 2007, 06:39 PM
I think the challenge with ITB's is there is no MAP sensor... so you can't run SD;
You have to run n-Alpha (TPS vs RPM VE table), which is what COS5 provides.
topfuelman
November 9th, 2007, 08:09 PM
I think the challenge with ITB's is there is no MAP sensor... so you can't run SD;
You have to run n-Alpha (TPS vs RPM VE table), which is what COS5 provides.
Actually, in the manifold design that I have, there is provision for a map sensor, (a limited volume common plenum) and factory map sensor is wired up and in place. There is however no maf sensor.
I understand that the vacuum signal is not as strong as a standard manifold, and that it is somewhat of a challenge to tune these properly. That is why I am looking for someone with knowledge or success in this area, using SD tuning.
Thanks,
Trev
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