Just wondering; if i get a chipped p28 and get it set up right, what sort of gains will i make pre vtec? current set up is:

120,000 mile b16a2
Sir2 cams
Fujitsubo B18 manifold (4-2-1)
Sports cat
Tanabe 60mm Hyper Medallion exhaust
Mugen airbox
169 Fly hp/ 112 lbft@7300 rpm

I just want to know if i'll get any more low down driveability from a good map or if all the gains are to be had from midrange upwards?

 

What engine computer are you currently running ?
Do you have a dynosheet showing your a/f ratio output ?

 

Stock 99-00 SI ECU.

AFR and dyno below:

 

You would gain power by leaning out the mixture where it is richer then 12.5:1