I am dealing with a 1990 4 Door 5Sp Acura Integra that has a B16A Swap. It is suffering from a lack of power. I can drive it, but it suffers on hills, and I have to remain in 4th gear on the freeway to maintain ANY drive-ability. It is also wasting gas quite badly/ running rich. I am getting approx. 13 miles per gallon. On the other hand it idles fine, and will rev throughout the rpm range up to 8K, but it is lacking in power. The following is a list of thing I have already addressed:

PR3 ECU came from a well running car

Injectors and resistor box came from a well running car

Distributor came from a well running car and I even changed the cap and rotor

All other Sensors are hooked up correctly- as far as I can tell

Timing Belt is installed correctly/ has not been changed since car was down due to blown trans. But had normal power at that point

No engine codes are being thrown

I have tried brand new spark plugs (NGK-R) and multiple different sets of plug wires.

The only thing I have not personally addressed is the exhaust system. I dont have the money to waste a hundred bucks at a muffler shop. The car does not have a catalytic converter, but does have an exhaust leak (judging by its sound when running)

The car is not in safety mode as it revs to 8K rpm, however it seems to rev slowly through-out the power band.

The engine compression tested to 175psi across the board, so I dont think the engine is bad.

I am, in my mine and others opinion a competent Honda mechanic and have numerous swaps under my belt. This is my only Daily Driver at this point and I dont have much money left to throw at it. I am absolutely baffled. Thank you for reading this long winded post!!!

I appreciate any and all suggestions. BTW you can email me direct at rchondarepair@yahoo.com

 

is your distributer advanced

 

or retarded? lol, but seriously, too much either way might do it... maybe o2 sensor(s), map sensor, maybe fpr but doubt it

 

yep, definately the distributor. try retarding first, then advance it if that doesnt work

 

i know this question is not part of this forum my da just recently feels like the tires are loose i checked them and there good i took thew tire off and check if the rotors were loose but there good im thinking its the motor mounts does anybody know if that can happend if your motor mounts are gone i have a b20 with b16 trans and its a torque monster so im thinking motor mounts finaly gave up if anybody can helo me ill apriciate it thanks

 

I have checked the distributor, and just to let yall know it was from distributor king on ebay, and very reputable source for me in the past. I tried it fully retarded, fully advanced and all points in between. would a severely clogged exhaust do this, and would it have to be flowing almost zero air for it to be this bad?

 

Try another FPR. Fresh Fuel Filter maybe.

Bad fuel pump?

was the clutch still in good shape when you did the swap?

just some ideas.

 

The clutch is good. I think its getting enough fuel, as its running kinda rich and I only get 12-14 miles per gallon. We think my spark is really week, but the dizzy run other cars just fine. Im baffled

 

i have the same problem with my swap. 90 ls with b16a swap. everything checks out good, this is blowing my mind, at least someone else has the problem too.

 

Well I guess I can take a bit of solace in that someone else is struggling with the same mystery BS too. Im going to try an OBD0 PR4 ecu that I have laying around just for kicks. I'll keep yall posted.

 

thanks

 

my crx si w/ b17a1 is also running rich..I think my problem may be timing though. i will let u guys know if it is or isn't. it runs rich as hell and gets crappy MPG. i am running obd1 am autoparts dizzy. replaced TPS, and Coolant Temperature Sensor..

 

take a look at this

http://asia.vtec.net/beystock/hks/

 

^^^ That article has a ton of usable info. Thanks for the link.

 

turns out my b17a1 had DSM turbo injectors in it...