Well...I am running a SE in what is equivalant to ITS. The airflow meter on the SE is very restrictive in comparison to the 2nd gen RX7 (13b). I can't personally say this is correct, but I have been told if the 2nd gen airflow meter is adapted to the SE there is a noticable amount of HP there. BUT this is ILLEGAL for IT racing.
Someone on this board told me adjusting the fuel pressure up to the area of 55 psi and timing around 20 degrees makes around 160 RWHP. I'm in the middle of making this change, so I can't comment to the gains.
SE: 9.4 compression ratio
89-91: 9.7 compression ratio
Intake ports on SE 13b are disgustingly small.
My advice is if you are thinking about IT racing and you haven't purchased the GSL-SE yet...DON'T...Goe for a 2nd gen RX-7.
You'll also appreciate the independant rear suspension of the 2nd gen.
Good luck.
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Allen Brown
#36 IT1
[email protected]