im not sure if this is the right section so please move this topic if needed.

i recently rebuilt my b16 block with stock bore ctr pistions. i left the head stock and im running a stock p28 until i get more funds. but now that everything is wired back up, the car struggles to stay on and dies within 10seconds.
i was told that because of the change in c/r, my a/f ratio is also thrown off and that i would need a basemap tune in order for the car to run. is this true? any advice is appreciated.

 

If you are running a STOCK P28 this is your problem. That ECU is for a SOHC 1.6L motor...timing is out of wack, and fuel is way out of wack for a setup like yours now.

 

thanks for answering.

this is a coincidence because i was going to give you guys a call about this tomorrow. can you pm me a quote for a basemap with launch control?

also is it ok if i give u guys a call tomorrow to discuss this or is a basemap def. the solution? i figured that i wouldve had to time my distributor or that i had some plugs crossed..etc.

 

The vehicle shouldn't simply die on a stock p28 using stock b16 cams.

1. Check your malfunction indication codes (if any are being thrown)
2. Resolve the MILS
3. Check & re-check your timing belt to ensure it is installed at top dead center.
4. Make sure your injectors clips are properly sequenced.

 

1. my ecu is an auto p28 and everything in the car is obd2 (2000 ek chassis)except my stepdown to obd1
2. MILS ?
3. the timing is correct, i figured the next place to check would be advancing/retarding my distributor
4. checked and double-checked. the injectors are wired in the proper sequence

i dont want to keep trying to start it because i dont want to mess anything up. ive tried to start it over 10 times with the same results

 

What is a "basemap tune"? That makes no sense!

A basemap is a very generalized calibration that helps save time by allowing the car to start and hopefully even idle. Essentially you have one basemap that will work for any B or D series engine within an OBD generation, no matter what the mods are. With a little bit of tweaking it should allow the car to start and idle. BUT IT IS NOT DRIVE-ABLE. Generally it will be very rich and the timing very retarded. This wont blow your engine immediately but it will cause catastrophic damage in a short amount of time.

A tune can be started from a basemap or from scratch. The tune is what makes the calibration drive-able. It is specific to one particular engine. You may have the same type of engine, same parts in your car, but someone else's tune will NOT be useable as anything more than a basemap for your tuner to begin from.

In other words, you cannot download or copy someone else's calibration to run your car reliably. And if a basemap is so conservative that it seems to run your engine well, then there is no point in running a programmable ECU because you have so much wasted potential.

Nothing replaces a good tune.

 

thanks but i know the difference between a basemap and a tune. i guess what i meant to say was do i need a basemap specifically for my setup.

is their anywhere online where i can find engine harness wiring diagrams for the engine harness? possibly with pics? im going to start troubleshooting their again and then try retiming my distributor. those are the only steps i can think of taking before sending out my ecu

 

Malfunction Indication Lamp (codes)

If you can't figure it out, tow the car to a local honda/acura tuner & have him inspect & tune the vehicle using a chipped obd1 ecu on hondata, ectune, neptune etc.

 

It sounds like you want to figure this out yourself (I encourage that).

OBD1 Wiring Pinouts
http://technet.ff-squad.com/wiring.obd1.htm

As far as engine harness, you need a Helms or a program like Alldata.

I dont know if you called yesterday...I was on the dyno most of the day.

EDIT: Do a quick compression or leak-down test on the motor, I know its fresh and the numbers might be a little lower than expected until the rings seat, but it should let you know if you have any mechanical issues.

 

thanks, yes it was me that called. i already have the obd1 pinouts for the ecu. i forgot where, but i saw a thread where they take a pic of every sensor location, name it, and i think they even color coded it

im back away at college so i wont be able to continue the car til april/may. luckily my school has alldata