whats the difference between.....

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Jul 13, 2008 | 03:40 PM

bwomp969

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lots of potential

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From: Cincinnati,Ohio

whats the difference between.....

an S4 13BT or an S5 13BT?
as in here: http://www.bestofjdm.com/COMPLETE-PA.../jdmmazda7.htm

Jul 13, 2008 | 03:44 PM

Jeezus

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From: Huntsville AL

Main differences, S4 has 7k RPM redline, S5 has 8k

S4 can run stock ECU and remove OMP, S5 has to run OMP or get forced into limp mode (stock ECU)

Best to ask the 2nd gen forum.

Jul 13, 2008 | 03:45 PM

blackedoutFC3S

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From: OP, KS

the S4s are lower compression, run a single TPS setup, where as S5s are higher compression, and run a duel TPS with a different intake manifold, etc. in short, the S5 is faster STOCK