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  1. Got a chance to take it to the track tonight- real world testing in FL

    Having just switched to a catless (ceramic coated Evolution Racewerks) from a catted (Active Autowerke) downpipe, it absolutely is. Even with just bolt-on power mods on my '21 (drop-in HKS filter, JB4 w/ @Jesse DaBears 93 tune, the downpipe, and an AWE Track exhaust), there's a noticable bump...

  2. Got a chance to take it to the track tonight- real world testing in FL

    TRC did another video with the same Supra with Meth, catless Downpipe and and ECU tune and managed an 11.58 so to be Just a bit behind that with just JB4 and catted downpipe. Not sure how much difference a cattless downpipe vs catted downpipe makes but it seems to be better catless. So I may...

  3. JB4 Custom Map 93 Octane

    Now I know there’s tons of numbers to backup what I’m feeling on the track! My wife wanted a louder car, so I got a nasty exhaust. @NitroYellowMKV had a great deal on a catless dp with a JB4. So next thing you know I’m buying a custom tune from Jesse. I didn’t need the data/numbers for tracking...

  4. What did you do to your Supra today?

    There are ready to go tunes out of the box. There is an option within the software to do a custom tune. You can select one of the out of the box tunes or buy a custom tune from @Jesse DaBears https://1fastsupra.com/products/a90-a91-mkv-supra-jb4-custom-maps-tuning

  5. What did you do to your Supra today?

    Thanks to for the brake down, I will certainly consider both routes. I am however a little confused. I thought the JB4 was plug and play the way folks talk about changing maps with an app on their phone?... I didn't realize additional cost to tune once installed. As for the warranty, no mention...

  6. JB4 Custom Map 93 Octane

    I’m south of you in Ft. Myers and have a catless dp, track exhaust, intake, and run on 93 only. Glad we have that over 91 here in FL. What a difference on track this custom tune makes! No dyno but I’ve spent 2 long weekends at Homestead and Sebring trying multiple maps and none. When I’m on map...

  7. A90 ECU TUNE + JB4 --->STOCK ECU

    Hello, I'm riding an A90 in Korea track time attack car My car's problem is that if I change the speed of six speeds, only the rpm rises. Lower boost is fine. jb4 log 22 psi is normal Pure800 bmc air filter catless down pipe fi exhaust 91 oct Remove ecu and tune jb4 wmi 7map (boos...

  8. Supra 2.0 JB4

    Another vouch for Jesse on JB4. OTS Maps for JB4 really aren't that great and everything is much smoother after working with him. Had Intake, Downpipe and Exhaust. Jesse was kind enough to do before and after tunes while I was modding my 2.0.

  9. 2021 Locked ECU w/ Bolt ons

    I don’t believe there are any catless downpipes that won’t give you a CEL. Even most catted downpipes still throw a CEL. The AA catted and I think one other that uses a GESI cat won’t throw a CEL, just about everything else will.

  10. 2021 Locked ECU w/ Bolt ons

    New to Supra platform coming from a Honda Civic Type R where everything was easy to bolt on and tune... Have a locked ECU 2021 Thinking about putting in a catless downpipe (AMS) , charge pipes, MST V2 Intake and HKS exhaust and run a piggy back JB4 for the time being anything I should be...

  11. Meth + JB4

    Hey everyone. I'm currently running a jb4 w/ a Jesse tune for map 6 on e30 (in addition to bolt-ons e.g. Exhaust, air intake, catless DP). Locked ECU, not looking for a full unlock either since I don't plan on sticking with the car forever. Looking at potentially going meth (+e40 map) since my...

  12. 1 Fast Supra BLACK FRIDAY SALE! 11/15-12/04

    The Holidays are here!! 1 Fast Supra will be starting its Black Friday Sale tomorrow 11/15 and it will go through 12/4. Use the following codes from now until the 4th! P2uned – 5% off with code: PAYPAL Armaspeed – 10% off all Armaspeed intakes with code: ARMA Ark DTS Exhaust - $450.00 off ARK...

  13. JB4 vs Unlocked Tune

    I have not messed with cold start but I can tell you that I have full access to adjusting the burbles and have personally used and adjusted them. It works no problem.

  14. JB4 Custom Map 93 Octane

    JB4 isn't like a full flash tune, so a downpipe isn't a giant thing on JB4 you should be pretty close on the stock system I believe. I just had a cat back and kept the stock downpipe.

  15. JB4 vs Unlocked Tune

    Burbles and similar features should still work. Certain features are not available for the Gen 2 B58 yet either. I recommend you reach out to MHD support for further clarification, or do the boring thing I did and read the usual manual

  16. JB4 Custom Map 93 Octane

    That estimate is including full exhaust?

  17. JB4 vs Unlocked Tune

    Something that caught my eye with MHD vs JB4 was the cold start feature with MHD, is it still useable with a partial unlock? If so, how much can it quite down the car on startup with a full exhaust system?

  18. JB4 vs Unlocked Tune

    Appreciate the explanation in this initial question. This is all new to me and interesting as shit! Happy unlocking :)

  19. Exhaust and dp without tune what are the consequences

    yeah I'm planning on getting one with a custom tune for the exhaust and dp. but just curious on what might happen lol

  20. JB4 Custom Map 93 Octane

    I’m soooooooo picky, no where near the knowledge of you guys and Jesse has worked with me tremendously. My car with a catless dp, AWE track exhaust, air intake, my exact brand of tires I like and only 93 octane. The power gains are insane when I’m on my custom Map 6. Best “mod” for the money...





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