what should i set the crossover with s2im and icebox as my only mods

 

also who can program a 99gsr ecu if not what year itr ecu is a direct replacement

 

I don't know about the VTEC x-over point but i would suggest getting some exhaust to relieve all that back pressure your creating.

 

i have a jdm dc header but still missing the cat and cant decide on a catback

 

of course ideally you would dyno and find the optimum point based on crossover, blah blah blah.

but i think people are setting their x-over at itr or near it, like 56-5700 but i believe these are likely people with more mods, especially cams.

you're going to want an ecu with a "single butterfly" program. not sure what your options are unless you downgrade to obd1 (which means buying a wiring harness adapter).

learn more at:
http://www.jdmhondaparts.com/wireharness.htm http://www.jdmhondaparts.com/ecu.htm

 

here this guy does some OBDII reprogramming....best bet would be a obdII to obdI harness converter and a chipped OBDI ecu

OBD-II Program !!!!!! Some people dream finally came through!!!!!

Chip ECU Rev Vtec Maker
59) P2TSP440001 B16A3 96-01 P2T 8500 4400 Spoon Si, SiR
60) P2TMN145001 B16A3 96-01 P2T 10000 4500 Mugen Si, SiR
61) P73MN145001 B18C5 96-01 P73 10000 4500 Mugen ITR

More to come, almost complete line of OBD-II programs for all JDM and
USDM
Honda. All program in Oki MSM 66P507 Microcontroller + 84 Pin PLCC
Socket +
Shipping US$350 each.
Sorry, no download of program because EPROM burner CANNOT burn 66P507!
http://www.angelfire.com/electronic/...rpt/index.html
For detail please email autoserverpt@hotmail.com.

Richard
Autoserve
Malaysia http://www.angelfire.com/electronic/autoserverpt/
autoserverpt@hotmail.com

 

wgat r the differences between 2000+ itr ecu and the 97-98 one

 

You do not want to do that... Simply swapping intake manifolds doesn't not necessitate the need to change your VTEC point. The only time VTEC engagement should be changed is when you are running different cams. Then you must set the VTEC appropriately for that particular cam profile/design.

Nor does swapping the intake manifold necessitate the need to switch ecus. Althought the p72 (GSR) ecu has IAB control, it does not alter fuel and timing during or after the IBA switch over point. Therefore simply disengaging or not running/having IAB's will not affect the ECU or performance related to the ECU. The p72 ecu will work just fine.

HTH

 

the reason i asked about the ecu is because i am gettin ctr cams