Hondata

B20b in my 91 crx
Headers
Intake
Aem fuel rail
Skunk manifold and 70mm TB
Stock injectors.
SO I’m attempting to tune my crx, using the b20b basemap hondata offers I can still not get car to run right. I do not have a wide band currently. Just posting to see if anyone else has a similar set up or some good advice to steer me in right direction. Any help would be appreciated. Got it around the block once but it fell flat on its face hard at around 4k

Can pay if you’re willing to help, have data logs ready to upload

SBLAZE99 wrote: Mon Apr 11, 2022 6:13 am Can pay if you’re willing to help, have data logs ready to upload

I can help out if you can provide datalogs with Wideband Data.

-Ed

You think I could get it to run well enough to drive while I wait for the wide band to come in?

SBLAZE99 wrote: Tue Apr 12, 2022 7:23 am You think I could get it to run well enough to drive while I wait for the wide band to come in?

I can’t help unless you have a wideband.

-Ed

Okay appreciate it man one should be here few days

SBLAZE99 wrote: Wed Apr 13, 2022 9:22 am Okay appreciate it man one should be here few days

Sounds good.

-Ed

Got my wide band, have weird cut outs at random rpm’s, very rich, gonna upload the datalog

SBLAZE99 wrote: Sat Apr 23, 2022 3:33 am Got my wide band, have weird cut outs at random rpm’s, very rich, gonna upload the datalog

Sounds good. Make sure the wideband it populating data in the datalog.

-Ed

Will post tomorrow morning when I get up

SBLAZE99 wrote: Sun Apr 24, 2022 1:16 am Will post tomorrow morning when I get up

Sounds good.

-Ed

I can perhaps help you a bit even though we are "in the blind" without your wideband.

Open your calibration and make sure you are set to Open Loop. Look at the low speed fuel map. Make sure that your lines are arranged with as much symmetry between them as possible. Make sure that no lines cross another or seem do be in a shape that is drastically different from the one next to it. Next take a look at the low speed timing. Make sure that your timing cells have numbers that end with .25 .50 .75 or are whole numbers. If any of them have weird numbers round them either up or down. Here's an example; if you saw a timing cell with 42.17 you'd want round UP to 42.25... If you saw a cell that reads 42.60 you'd want to round that DOWN to 42.50

Making no other changes, Save your calibration and upload that to your ecu and see if there's improvement.