Recently installed a SC Project CR-T exhaust on to my 2024 streetfighter V4. I did the upmap ecu flash for that specific exhaust but noticed that the throttle response is very choppy / studders at low rpm. On one occasion the bike got a check engine light p061A “ internal control module torque performance”. I was able to clear the code but it recently did it again at around 3k rpm. Anyone have insight on what could be going wrong?
Streetfighter V4 2024 SC Project Upmap Issues
- Thread starter Conman
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This means that the airflow maps are improperly tuned with the Termi Upmap and the torque monitoring diagnostics are triggered. I would not recommend continuing to run this map.
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expensive new bike, cheap exhaust, cheap map.....what do you expect?
What do you recommend? I have the same issue with my 2021 SFV4s.
Definitely would make sense. I reached out to Upmap to see if they have any explanation as the map is advertised for that specific bike and exhaust setup. Would a brentune be better suited?
I agree with the cheap map. What would you recommend in terms of getting the correct mapping for an exhaust like that?
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You have a reply above from Deussen. Both themselves and Shiv at OFT provide excellent service and results. I haven't used them but BT seems rougher around the edges and some say good and some say bad about them. The thing is, the Deussen tunes are sophisticated. That is what it takes to handle a multi-layered problem like tuning a V4. It takes actual expertise. Deussen or OFT.
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Pay Deussen 
I ended up running it for about 1000miles to get a better understanding of the issue. With the upmap tune it runs perfectly fine when the bike it driven spiritedly. The only time you May or may not run into jumpy throttle response or surges in the bikes power is at low rpm. Generally this would only happen when in traffic specifically when it was cooler outside around 40 degrees Fahrenheit. That being said the bike is still tricky drive at slow speeds. It kinda makes sense because you’re driving a super bike with unlocked torque limits in 1st to 3rd gear. The map is not meant to make it a better commuter bike. I’m considering taking it to get a custom tune to see if there is really any difference. Also in terms of if the tune is damaging or hurting the engine; I’ve found zero evidence. I change the oil at 2.5k miles and saw only normal engine wear signs. This being a few super small metal fragments around the plugs magnet. Since then the oil has stayed very clear at 3.2k miles now.
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These are total pussycats just putting around traffic or not. Enabling full power in all gears doesn't change this. Suprises me how docile they are. It's an artifact of the short cam timing. Not only that they have a lot of flywheel mass. They shouldn't be ratty at all at low speeds. That map just blows (I sorta think I know why). I suspect Daniels right, it's got a map conflict.
I put the exhaust on last week and am running the upmap tune for now. I haven't noticed any issues with the idle. Below 3500rpm sometimes it is a bit twitchy but that seems to have gone away for the most part after a few rides. That being said I'm going with a Deussen tune, waiting on the flasher right now. Hopefully that smooths everything out completely.
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