Engine Braking - Suzuki GSXS1000 Forum
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post #1 of 10 Old 02-09-2020, 09:03 AM Thread Starter
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Engine Braking

Was curious about reducing engine braking on the gsxs1000. How much people had it reduced bye and opinions on the results. Also how is it reduced by a tuner? Is it a overall percentage or is it reduced gear bye gear? I ask because I feel engine breaking is strong especially for me in 2nd gear and find myself running my bike in 3rd gear sometimes when I would prefer to be in 2nd for the power I want but want less engine breaking when off the gas. I plan on taking my bike to the shop that tuned it to have the race tools enabled on my bike and figured I might get them to adjust engine braking while I was there. Thanks.
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post #2 of 10 Old 02-09-2020, 09:31 AM
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The injectors are cut on closed throttle for economy reasons. The woolich software has a check mark, as to whether you want it...…. or not.
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post #3 of 10 Old 02-09-2020, 09:34 AM
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Get your ECU flashed. Result is normal engine braking, huge improvement.
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post #4 of 10 Old 02-09-2020, 12:12 PM
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Danos did mine and that was one of the biggest concerns I had and asked him about. After the flash the bike is great, especially coming down those steep mountain grades.

Slow is fast
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post #5 of 10 Old 02-09-2020, 07:02 PM
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I agree bike is so much better after having snow tune it
To be honest after riding the stock ECU very hard for 10,000 miles I almost miss the hard engine breaking but I just use more of my breaks now which is better for engine life anyways right hahaha


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post #6 of 10 Old Yesterday, 05:52 AM
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Yes, this is the Deceleration Fuel Cut Off killing the injectors on throttle shut off. It actually cuts the electric power to them, so no fuel flows from about .75 of a second after throttle is shut off 100% (only if you are below 7,500 rpm) and then it starts them up again at 2,500 rpm.

This dyno chart shows you the process:



It makes no difference, as far as I can tell, which gear you are in. It's the rpm range that activates it.

Only way round it is to have it flashed out with the Woolich (or similar) software:



More info on the links in my signature below.

Greetings

GSXS-1000S (2019)
GSX1100/GS1150 EFE (1984) x3
GS1100G (1983) x 2
GSX750 EF (1984)

GSXS Tuners Facebook Group: https://www.facebook.com/groups/1686733718126621/

GSXS Tuners Blog: https://suzukigsxs1000.blogspot.com/
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post #7 of 10 Old Yesterday, 09:30 AM
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WAS one of my biggest concerns also. I sent my ECU to Dano and he got rid of 99% of the twitchiness and cut about 40-50% of the engine brake out. Much improved!! I have two other bikes and the engine brake now is just slightly more than them. I would say it's still great for the twisties and more than acceptable for highway runs. Well worth the $189 for the Dano reflash.
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post #8 of 10 Old Yesterday, 01:13 PM
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Dano guy here, I love how my bike runs. I have stock exhaust, with a decat, and kn air filter and such.

Just wish winter would be over so I could go for a ride again
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post #9 of 10 Old Yesterday, 02:31 PM
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Is there a way to check whether my ECU was flashed by the previous owner? I bought my bike at 20,000km and it has asensitive but NOT twitchy/snatchy throttle and has very ordinary engine braking, so I'm starting to wonder whether it had been flashed.
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post #10 of 10 Old Yesterday, 08:27 PM Thread Starter
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Thanks for all the responses. I had my ECU dyno tuned with Woolich software 3 years ago and it’s really worth the money! It made a huge difference! Very happy with my bike just think that the engine breaking could still be reduced some in 2nd gear some to suit my taste.
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