Booster Plug or PC5? - Suzuki GSXS1000 Forum
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post #1 of 15 Old 07-23-2017, 06:21 PM Thread Starter
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Booster Plug or PC5?

Hey Crew

I've read through a bunch of posts here but I'm stuck in paralysis analysis. I have the low RPM hunting between 2-4K where the RPM flutters. I don't have the issue holding a constant speed like I have seen on youtube. BoosterPlug and PC5 seem like the most popular options. Has anybody bought one of these for the same issue and NOT had it fix the problem? The bike is plenty fast enough so I'm not worried about more HP. I'd just like to smooth things out a little bit when I am riding through towns at low RPMs.

Options:
BoosterPlug $150ish
PC5 - $325 shipped
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post #2 of 15 Old 07-23-2017, 06:33 PM
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Originally Posted by wojo72 View Post
Hey Crew



I've read through a bunch of posts here but I'm stuck in paralysis analysis. I have the low RPM hunting between 2-4K where the RPM flutters. I don't have the issue holding a constant speed like I have seen on youtube. BoosterPlug and PC5 seem like the most popular options. Has anybody bought one of these for the same issue and NOT had it fix the problem? The bike is plenty fast enough so I'm not worried about more HP. I'd just like to smooth things out a little bit when I am riding through towns at low RPMs.



Options:

BoosterPlug $150ish

PC5 - $325 shipped


A $20 o2 eliminator should fix your problem, the bike is surging as the ECU goes into closed loop mode during constant throttle and leans the fueling out, this will stop it going into this mode.
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post #3 of 15 Old 07-23-2017, 08:20 PM
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Hi. Boosterplug will not resolve hunting issue, PC5 will.


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post #4 of 15 Old 07-23-2017, 08:59 PM
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Originally Posted by Ykun View Post
Hi. Boosterplug will not resolve hunting issue, PC5 will.


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it's the o2 eliminator supplied with the PCV that will fix the issue not the actual PCV though.
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Previous bikes
1982 YZ80J
1977 TS185
1981 XR500
1994 GSX750 Katana (Popup)
1981 GSX1100
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2008 GSX1400
Current bikes
2005 V-Strom 650 Blue
2016 GSXS1000F Blue
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post #5 of 15 Old 07-23-2017, 10:24 PM
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Originally Posted by nicka View Post
it's the o2 eliminator supplied with the PCV that will fix the issue not the actual PCV though.
Nicka in one of your posts another thread...when you added eliminator it ran rich then you added PC to lean out
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post #6 of 15 Old 07-23-2017, 10:29 PM
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Who comes up with this crap?
An 02 elimator will not fix anything on its own!
Solving surging and jerky throttle problems with this bike does not stop at adding one thing (I'd like to be proven wrong here), however one item like pcv, throttle tamer etc may make it reduce enough so that it's tolerable.

After I installed my pcv i read about just adding the 02 elimator, I zeroed my map (effectively making the bike stock with just the 02 elimator) it didn't do diddly squat that I could tell.

From my findings the servo elimator is what removes that stumble....however it's not just that simple, by permantly opening the servo you have then created another problem. The stock map is setup to incorporate it, so it then needs the fueling sorting. Mine got worse until the fuel was sorted.

Imo to remove the 2-3k stumble you have to remove the servo via an elimator, then you need a pcv and auto tune or get the bike remapped on a dyno. That's how it is I'm afraid.
A dyno (with a good tuner) will sort out all the issues, fuel cut, stumble, ignition retard, get the fueling correct all over the map and get a few more bhp.

One more thing I'd like to add, adding fuel to the 0% throttle column DOES add fue, this despite what ive read on this forum. This means that you don't need the fuel cut disabled nesseraly. The only problem I have is my auto tune cannot accurately read at such low throttle openings, there is not enough exhaust flow to determine what afr I'm getting. I started by adding fuel around idle at 5% increments, it stalls at 20%, after much fiddling, 8% and my idle is perfect.

Sorry for such a long off tangent post but I felt this just needs saying

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post #7 of 15 Old 07-23-2017, 10:44 PM
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Just to add, before anyone adds 8% to their pcv, I have a custom exhaust so it will probably be different everyone's else's values.

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post #8 of 15 Old 07-23-2017, 10:49 PM
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Doddy you should be banned for such talk
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post #9 of 15 Old 07-23-2017, 11:00 PM
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I had a booster plug and throttle tamer on mine which really improved things. But after I put a full M4 exhaust system on the bike, which eliminated the servo and removed the cat, the bike was absolutely perfect. It could breathe!! And no tune is necessary with the M4. It ran awesomely! I'm hoping the 2018's have all been sorted as far as the throttles go but mine will still get an M4 system straight away for the looks, sound and performance.

2016 Red/Black GSX-S1000F.

2015 BMW 1200GS

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post #10 of 15 Old 07-23-2017, 11:07 PM
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Originally Posted by LEAVEITSTOCK View Post
Nicka in one of your posts another thread...when you added eliminator it ran rich then you added PC to lean out
Correct at the time of installing it as i am learning also but i believe now that suzuki add extra fuel at that range to reduce the dip in power and the auto tune was leaning it out to the optimum AFR which was probably reducing its power output also but barely noticeably although i am sure a dyno would pick it up.
That's the disadvantage with the auto tune in that you can get a perfect AFR reading but not maximum HP throughout the range that a dyno will achieve.
I have since had the updated ECU installed which solved the constant throttle issue so i removed the auto tune and reinstalled the O2 sensor and .......wait for it........(GONE BACK TO STOCK)
Except for the cat delete to let the bike breath and run cooler its running fine.
My PCV is still installed but with a zero map and the o2 sensor installed and as its been winter here i have been trail bashing my v-strom while the GSXS has gone into hibernation till later where i may even remove the PCV some stage if i don't complete my exhaust mods as originally planned.
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Previous bikes
1982 YZ80J
1977 TS185
1981 XR500
1994 GSX750 Katana (Popup)
1981 GSX1100
1999 GSX750F
2008 GSX1400
Current bikes
2005 V-Strom 650 Blue
2016 GSXS1000F Blue
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