crossbar17

i have a 88 SE wiht the mods in my sig, my intake and thorttle body were ported about 25%larger than stock, i have a full custom exhaust with no catalytic ocnverter, if i run 680cc secondaries and a tII fuel pump will i be runnign rich??? is it worth running these fuel modifications??? also i will have it all tuned with a Apexi S-AFC.....is the injectors and fuel pump over kill?? i need you opinions

i am shootiing for as close to 200 hp i can get(165-175 at the rear wheels)
CB

gr0undz3r0

Sounds like overkill to me but I am no expert. I think you would be running rich.

go_speed_go

I take you goal is the first street driven 200hp?
The second gen RX-7s that run in ITA aren't allowed to port and put out 200-220 flywheel hp. The catch is that their exhausts are around 103db.

They pretty much run all the mods you have plus a header and a remapped ECU.

NZConvertible

The NA injectors are good for 230-240fwhp, so you will not need to change them. You will need some way to trim the mixtures to suit your mods, so the S-AFC will be sweet.

rico05

no one has ever done a 200 hp streetable n/a? Looks like a challenge! Can this be done w/o a street/bridge/prephial port?

go_speed_go

No one on the forum, yet. Although a few members have mentioned non-ported NA cars with full EMS that put out that much power.

It's pretty easy to do with porting. If you're not going to port and not alter the fuel AND spark, then coming up with a non"arrest me" exhaust is going to be tricky.

crossbar17

what EMS?? and i should still use the stock fuel pump too or awith to the tII??

CB

rico05

Ok, so a street port, stock injectors, S-AFC, header, midpipe, and straight through single muffler, rebuild (duh!), cold air box could result in 200 rear whell hp? I want to make my n/a as fast as possible for under $5K, then I will sell it and get a TII. Stick w/ a stock fuel pump. A TII would be over kill. The S-AFC should suffice.

go_speed_go

Engine Management System. Such as Haltech or Wolf.
There's an entire section of the forum dedicated to them.
DO NOT ask which one is better, it can get ugly real fast.

go_speed_go

I don't know about 200rwhp. I would have to be tuned real well.
Do you have a goal you want to accomplish before moving on to a turbo? You're going to take a big (at least 30-40%) loss on all the mods when you sell it. If you want a turbo, save your NA mod money for the TII.