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Lesley Performance Diesel

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Kokomo, IN
Lesley Performance Diesel

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Lesley Performance Diesel is a business specializing in creating custom diesel tuning for Cummins, Duramax and PowerStroke diesels.

02/06/2026

Haven’t posted in a while but wanted to update everyone on the platforms I support for tuning.

05-25 Ford 6.0, 6.4, 6.7

Duramax 01-26 LB7, LLY, LBZ, LMM, LML, LGH, L5P, L5D

Duramax 3.0L 20-25 LM2 and LZO

Ram/ Cummins 03-25 5.9 and 6.7

I also support some Cummins HD Controllers for Medium and Heavy Duty. Contact if you are interested and I’ll let you know.

Been getting a lot of requests about AG tuning. It’s something that I want to start doing but at the moment I don’t have time for the R&D. If the EPA right to repair does come to fruition I will certainly be pursuing that venture more aggressively. I will definitely let everyone know if that comes along. Thank you!

12/26/2024

Hope everyone had a Merry Christmas! 2022 Ram ECM swap and tune for this customer that drove from Illinois today! Thanks for the business!

06/10/2023

Just got done putting some LPD custom shift on the fly tuning on this 2017 Ford 6.7. 😏

02/22/2023

I feel I need to post this more often than I should but I want to repeat this….

We will not troubleshoot nor answer any questions regarding tuning from other tuning companies. Period. If you’re having an issue with your tune that was not purchased from us we will not help you resolve the issue. That is the responsibility of the person you got the tuning from. If you have tried to dispute the issue with them and didn’t get it fixed we will be happy to sell you a tune and try to diagnose the issue if it is not tune related. Thank you.

02/15/2023

6.7 ford guys, you know have a solution to get rid of the CP4!

01/06/2023

Coming soon!!!! People have often asked and now I can finally say that soon you will be able to have a LPD tuned VW TDI!! Testing is beginning now on our own 2000 VW Beetle 1.9 ALH. First steps will be developing tunes for a base stock platform. Once we get some proven tuning down we will be upgrading the injectors, turbo and cam to develop tunes for higher modified vehicles. With the narrow avenue that we have in the TDI tuning world here in the US I am excited to start this project This is going to be a fun road ahead! Other TDI platforms will be following behind.

12/11/2022

ATTENTION ALL 2019-2021 RAM CUSTOMERS!!!!

Anyone contemplating scheduling their 19-20 Ram to get the CP3 update be aware!!! Stellantis is applying a tuning block to the ecm when they update the software for the CP3. This is also a software update for 2021 trucks with CP3 already.

This morning I attempted to tune a 2019 that just had this service done this week and I am not able to flash the truck.

Anyone toying the idea of ever doing any tuning to their 19-21 trucks needs to choose whether or not to have a dealer do any warranty work.or service to their vehicle whatsoever. As we all know, dealers will do things that customers do not ask for. If they do this update to your truck you are screwed until there is a solution on the horizon.

PLEASE BE AWARE!!!!

07/10/2022

With 15yrs of tuning behind me, I have never changed what I specialize in and that is TUNING. I do not perform any mechanical modifications or repairs. That makes me ensure that I can focus solely on producing a tune that the customer in turn reaps all the benefits. I’ve seen some people try to do both and it just doesn’t work. Stick to what you’re good at, that’s what makes you successful. But with that said, I’ll more than happy be that guy that makes their customer happy when they have failed.

As far as this picture goes, who needs a bed when all you haul is ass???

07/09/2022

2019 Ford 6.7 got a tow tune and trans tune today, and a 2009 Chevy Duramax Express Van got a little 60hp bump in power. Contact us for all your diesel pickup truck tuning needs.

06/12/2022

This L5P just got some LPD love with a custom SOTF tune. If you feel like your L5P needs to be a little lighter on its feet contact us for some custom tuning.

Address

13062 S 150 E
Kokomo, IN
46901

Telephone

+17654328972

Website

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