aquito

Ok so I just swapped a Jdm 2nd gen SIR II b16a swap into my obd0 90 Integra. I used a stock jdm pw0 ecu. Now the problem is that vtec engages at 4800 rpms but has no power till it hits about 5600 rpms..I've heard that the 2nd gen b16 uses the p30 ecu and that has a vtec cross over at 5600 rpms..and I'm using a pw0 that has vtec at 4800..so can that be the problem? Do I have to chip my ecu or get a vafc to raise it to about 5600?

aquito

No one?

mouab18c1

iTrader: (5)

Get the correct ecu or buy a chipped ecu with a p30 basemap on it.

2LEM1

iTrader: (1)

I'm pretty sure all P30s have the same VTEC crossover point - 5600 RPMs

aquito

Yea but remember I'm runing a obo0 car so my two choices where pw0 or a pr3 and they both have vtec at 4800..if I wanna change to p30 I would have to do a obd1 converssion lol..Can a pr4 obd0 be chipped to have a p30 base map? I want to delete the secondary o2 sensor too because the pw0 requires two o2 sensors

94 ls-r

obd 0 cant be chipped. Has to be converted to obd1. Vafc are not very good for tuning

mouab18c1

iTrader: (5)

VAFC= Epic Fail

Buy an obd0-obd1 conversion harness and get a chipped ecu with p30 basemap. Thats your best bet.

94 ls-r

vafc is one step above v tec on a switch!

2LEM1

iTrader: (1)

Im not even sure what that last comment means... but I would take a car tuned on a dyno with a VAFC 20 million times before I would take a car with cams, and bolt ons, that WASN'T tuned at all. VAFCs don't inherently suck, there's just better tuning devices out there.

josephcmiller2

Some OBD0 ECU's can be chipped, but I'm not sure about the one that you have. Anyways, OBD0-OBD1 with a chip is probably the best way to go, then get it tuned like 2LEM1 said.

mouab18c1

iTrader: (5)

They suck, thats why you don't see them now days. Maybe one in a long *** time.

aquito

So if I buy a obd0 to obd1 harness ir would be to get a obd1 chipped cu and that's it? Or do I need a 4 wire o2 sensor conversion plus obd1 injectors and dizzy? Cuz I have a p28 chipped at my house that I could use I would only have to change the map cuz it's fo a b20vtec

mouab18c1

iTrader: (5)

Yeap that's all you need just the ecu conversion harness. I can burn and ship you a basemap on a SST chip for your setup. $20 shipped just add 3% for paypal fees

JohnnyWash1

I had a B16A2 in my EG with a P72 (4500rpm crossover) and it made no power until close to 6K. Once I switched to the proper ECU, with 5700rpm crossover, it was a totally different car.

Mattb16teg

So you've had the car on the dyno? How else would you know "it doesn't make power til 5600"?.........................

mouab18c1

iTrader: (5)

Sounds like fuel restriction without the proper ecu. Should be obvious; wideband gauge would help determine that the best.

aquito

Can I chip the pw0 to be as a p30?

aquito

Dyno But

Mattb16teg

Wat?

tonythetuner®

Lol u mean butt dyno not dyno butt lmao. But ya like every one said use the right ecu. Or get the right base map.

mouab18c1

iTrader: (5)

Why do you need to chip this ecu is you already have a chipped p28?

Why not just buy one of my chipped/ converted p06 ecu's with a p30 basemap?

You're making it harder on yourself by trying to do more work.

vtecfed

too funny..i actually rolled that way in the back in the 90's for a thankfully short amount of time. better than no vtec i guess?.?...