I am new to ECU tuning, my ride is the JDM CF4 SirT with F20B engine and T2T4 tranny
my car modification as below

1) Mugen Induction box
2) Doghouse intake pipe
3) 70mm TB
4) ported Inake Manifold
5) Mugen 4-2-1 Exhausted manifold
6) FEEL'S middle to end exhaust
7) mfactory 4.64 Final Drive in T2T4 tranny

there is no full-con from mugen/SPOON/J's racing, what I can do for the ECU tuning?

 

Hondata s300, Neptune RTP, eCtune would be ideal solutions.

For more information read the FAQs section of the efi forum.

 

Thanks!

For the initial setup, is that i need to buy the following item from Hondata?

1) p28 ecu + s300
2) converision hardness (OBD2 -> OBD1)

any other things I have miss?

 

you'll need to have the p28 modded to accept the s300, which isn't just the same as chipping an ecu, almost, but slightly different.

I personally would go with the Neptune RTP system, but thats just me. Its cheaper than hondata and has much much better tech support that the almost non-existant (call your retailer or post on our forum) tech support from hondata. JR (hrtuning/neptune) has incredible tech support like you wouldn't believe and makes an awesome product that competes with the other top programs out there right now (hondata/ectune).