B16A1 Map/TPS Issue?
Posted: Thu Sep 24, 2020 7:28 am
Hi guys.
I have a Honda B16A1 Powered classic Mini which is running a DTA S40 Pro. I completed the project last year and have run it on a base map preloaded by Watsons when i bought the ECU Kit from them. The car ran fine until i started having issues with throttle hesitation around 3000rpm under light load so from that point i changed multiple things to try and correct the issue (TPS Sensor and Plug, Ignition Coil, HT Leads, Injectors professionally cleaned and resealed, Fuel filter cleaned) None of this aided the problem. From there i decided to get it on a local hub dyno owned by a friend to see if we could check the map, aided by another acquaintance whom is pretty savvy with mapping. We had a good 6 hours on the dyno trying to tweak things but eventually ran into an issue with what would seem to be the TPS giving a strange reading.
We did pulls upto 8000rpm and whilst watching the live mapping on DTASwin with the Throttle Position window open during the pulls, foot flat to the floor and showing Throttle Position reading 100% during the pull, from around 5000rpm all the way to 8000rpm, the throttle position starts to drop off gradually to around 75% which obviously in turn is fuelling the engine totally wrong. We checked for any electrical noise that could possibly be affecting the TPS, fitted a bigger gauge engine earth strap and also traced the wiring to make sure the sensor grounds were back to the ECU to make sure they were running at the required 5v. This all seemed to be in order so did another pull and the same result is happening.
Sorry for babbling on, i've tried to explain the issue as best as i can, but i myself am not the best with the mapping and software! Haha. But if anyone can shine any light on this or tell us that we are missing something then any help will be much appreciated!
I put in the title if anyone has a B16A1 map to share then i would greatly appreciate this just so i can get the car running better than it is at the moment, as the modified map is now pretty rubbish.
Cheers, Ben.
I have a Honda B16A1 Powered classic Mini which is running a DTA S40 Pro. I completed the project last year and have run it on a base map preloaded by Watsons when i bought the ECU Kit from them. The car ran fine until i started having issues with throttle hesitation around 3000rpm under light load so from that point i changed multiple things to try and correct the issue (TPS Sensor and Plug, Ignition Coil, HT Leads, Injectors professionally cleaned and resealed, Fuel filter cleaned) None of this aided the problem. From there i decided to get it on a local hub dyno owned by a friend to see if we could check the map, aided by another acquaintance whom is pretty savvy with mapping. We had a good 6 hours on the dyno trying to tweak things but eventually ran into an issue with what would seem to be the TPS giving a strange reading.
We did pulls upto 8000rpm and whilst watching the live mapping on DTASwin with the Throttle Position window open during the pulls, foot flat to the floor and showing Throttle Position reading 100% during the pull, from around 5000rpm all the way to 8000rpm, the throttle position starts to drop off gradually to around 75% which obviously in turn is fuelling the engine totally wrong. We checked for any electrical noise that could possibly be affecting the TPS, fitted a bigger gauge engine earth strap and also traced the wiring to make sure the sensor grounds were back to the ECU to make sure they were running at the required 5v. This all seemed to be in order so did another pull and the same result is happening.
Sorry for babbling on, i've tried to explain the issue as best as i can, but i myself am not the best with the mapping and software! Haha. But if anyone can shine any light on this or tell us that we are missing something then any help will be much appreciated!
I put in the title if anyone has a B16A1 map to share then i would greatly appreciate this just so i can get the car running better than it is at the moment, as the modified map is now pretty rubbish.
Cheers, Ben.