TT331FB
04-02-2007, 08:48 AM
Hi wise ones!
I'm comparing the tunes and what I see is the MAF is almost the same. The injectors are different, 19 vs 24 . The big difference is the injector offset vs voltage. It seems to me, this is how Ford matched the 24# injectors to the standard MAF used for both cars. I have seen published offset tables, for the 24# injectors and they were from the Cobra which are not typical due to the MAF not being calibrated for the injector size.
I don't see any big differences in the tune A/F tables except the Cobra tune is a little fatter and the GT tune has a little more timing. The Cobra tune uses the same number for high/low injector slope.
I'm thinking I will start with the GT tune and build from there. I don't see any advantages to using the Cobra tune.
I run a C&L, 73 MM with Orange tube, 24#. I'm thinking I will just ratio up the flow numbers for the stock MAF curve, new value = old *24/19 for a starting point. I see someone has posted a ProM flowed 73 MM 24# C&L but they didn't identify the cal tube that was used. C&L doesn't use the same tube for every 24# application.
Comments?
Thank,
Eric
I'm comparing the tunes and what I see is the MAF is almost the same. The injectors are different, 19 vs 24 . The big difference is the injector offset vs voltage. It seems to me, this is how Ford matched the 24# injectors to the standard MAF used for both cars. I have seen published offset tables, for the 24# injectors and they were from the Cobra which are not typical due to the MAF not being calibrated for the injector size.
I don't see any big differences in the tune A/F tables except the Cobra tune is a little fatter and the GT tune has a little more timing. The Cobra tune uses the same number for high/low injector slope.
I'm thinking I will start with the GT tune and build from there. I don't see any advantages to using the Cobra tune.
I run a C&L, 73 MM with Orange tube, 24#. I'm thinking I will just ratio up the flow numbers for the stock MAF curve, new value = old *24/19 for a starting point. I see someone has posted a ProM flowed 73 MM 24# C&L but they didn't identify the cal tube that was used. C&L doesn't use the same tube for every 24# application.
Comments?
Thank,
Eric