Overwinter Upgrades and Modifications - Suzuki GSXS1000 Forum
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post #1 of 24 Old 02-26-2019, 03:04 PM Thread Starter
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Talking Overwinter Upgrades and Modifications

Although it's been a mild winter and not much snow about I started to modify the bike in the lead up to winter to improve what is a half decent bike to get it to a good standard of power and handling, my list is below for your interest/comments.

Ohlins S46HR1C1LS bespoke build rear shock, Race TTX valving and 105 N/mm spring, the race valving differs to the roadgoing TTX builds as it offers a plusher more reactive valving.

Full M4 Exhaust system, the only one available at the time with decent size and length secondaries to help eradicate the torque dip between 4000 and 5500 Rpm. Had I know PhuketPaul was going to build more systems I'd have likely taken one of his full systems.

Air box resonator/restrictor plate removed and K & N filter fitted.

PAIR Valve eliminator block off plates fitted.

PUIG Bar end mirrors. R & G Blanking screws fitted in place of the origional mirrors.

PUIG Dark tint sport screen.

Ferodo ZRAC front brake pads, Ferodo ST rear brake pads.

LSL RR Levers.

Genuine Suzuki LED Indicators.

Stainless steel tail tidy.

Suzuki Genuine Tank Pad and Tank Side Protector kit.

RAM Mounts fitted for Garmin GPS and Garmin Action Cam.

GIVI Tank Ring for my tank bag.

Rear seat cowl.

Rear footpegs removed.


Still to complete....

ECU Flash/Remap, happening this Thursday.

HEL Stainless Brakeline kit, front and rear.

Front fork kit/revalve, just awaiting the release of the Ohlins kit which I will again have as a bespoke build.

Tyres, my road wheels still have the Dunlop OE tyres fitted which will be changed after the remap as the dyno time will finish them off. I'll be fitting a 190/55 profile rear having tested it against the 200/55 on my track wheels and the 190/55 offers much better turn in and high speed stability as the 200/55 profile is too peaked on a 6.00 inch rim and reduces the contact patch too much in a straight line.
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Beaker, mike d, quatro and 1 others like this.

4 wheels move the body, but 2 wheels move the soul.

1982 Honda CB750 BOL D'OR
2017 Kawasaki GTR 1400
2017 Suzuki GSX S1000

Last edited by Robbieben; 02-26-2019 at 03:08 PM.
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post #2 of 24 Old 02-26-2019, 03:54 PM
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Seriously nice.
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post #3 of 24 Old 02-26-2019, 08:09 PM
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Quote:
Originally Posted by Robbieben View Post
Tyres, my road wheels still have the Dunlop OE tyres fitted which will be changed after the remap as the dyno time will finish them off. I'll be fitting a 190/55 profile rear having tested it against the 200/55 on my track wheels and the 190/55 offers much better turn in and high speed stability as the 200/55 profile is too peaked on a 6.00 inch rim and reduces the contact patch too much in a straight line.
Hi,

Which tyres did you test? I'm using Pirelli 200/55 Rosso Corsa 2 and before that Supercorsa V2 and there are only very slightly larger than the 190/55 that there is no appreciable visible change in profile (The 200 is only about 4mm wider than the 190)

And w all know the stated width of the type is almost not related at all to the actual size.
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Last edited by PhuketPaul; 02-26-2019 at 10:35 PM.
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post #4 of 24 Old 02-26-2019, 10:13 PM
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Quote:
Originally Posted by Robbieben View Post
Although it's been a mild winter and not much snow about I started to modify the bike in the lead up to winter to improve what is a half decent bike to get it to a good standard of power and handling, my list is below for your interest/comments.

Ohlins S46HR1C1LS bespoke build rear shock, Race TTX valving and 105 N/mm spring, the race valving differs to the roadgoing TTX builds as it offers a plusher more reactive valving.

Full M4 Exhaust system, the only one available at the time with decent size and length secondaries to help eradicate the torque dip between 4000 and 5500 Rpm. Had I know PhuketPaul was going to build more systems I'd have likely taken one of his full systems.

Air box resonator/restrictor plate removed and K & N filter fitted.

PAIR Valve eliminator block off plates fitted.

PUIG Bar end mirrors. R & G Blanking screws fitted in place of the origional mirrors.

PUIG Dark tint sport screen.

Ferodo ZRAC front brake pads, Ferodo ST rear brake pads.

LSL RR Levers.

Genuine Suzuki LED Indicators.

Stainless steel tail tidy.

Suzuki Genuine Tank Pad and Tank Side Protector kit.

RAM Mounts fitted for Garmin GPS and Garmin Action Cam.

GIVI Tank Ring for my tank bag.

Rear seat cowl.

Rear footpegs removed.


Still to complete....

ECU Flash/Remap, happening this Thursday.

HEL Stainless Brakeline kit, front and rear.

Front fork kit/revalve, just awaiting the release of the Ohlins kit which I will again have as a bespoke build.

Tyres, my road wheels still have the Dunlop OE tyres fitted which will be changed after the remap as the dyno time will finish them off. I'll be fitting a 190/55 profile rear having tested it against the 200/55 on my track wheels and the 190/55 offers much better turn in and high speed stability as the 200/55 profile is too peaked on a 6.00 inch rim and reduces the contact patch too much in a straight line.
Nice work! Looks like a freakin' mean machine now!
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post #5 of 24 Old 02-27-2019, 08:58 AM
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Looks bad ass, nice job! Love the blacked out side panels and tank sides. What's that sticker on the right heel guard?
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post #6 of 24 Old 02-27-2019, 04:45 PM Thread Starter
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Quote:
Originally Posted by PhuketPaul View Post
Hi,

Which tyres did you test? I'm using Pirelli 200/55 Rosso Corsa 2 and before that Supercorsa V2 and there are only very slightly larger than the 190/55 that there is no appreciable visible change in profile (The 200 is only about 4mm wider than the 190)

And w all know the stated width of the type is almost not related at all to the actual size.
I use Michelin track slicks or wets, the Michelin's are a larger tyre in comparison to the Pirelli's and are a more peaked profile to help with steering input on lean, their Pilot Power RS and Pilot Power 3 road tyres are the same ACT carcass as the track tyres so as I'm used to them on the track and road it's what I'll stick with. The 200/55 Michelin slick won't fit with the standard rear hugger, I had to remove it. The ACT carcass allows pressure adjustment to suit conditions, temp etc.
I've used them for a few years now and love the feedback from the tyres, it lets you run and drift and you can feel everything. I also like Dunlop Sportsmart TT but can wreck one in 8-900 miles on the rear.

Quote:
Originally Posted by Rapido1 View Post
Looks bad ass, nice job! Love the blacked out side panels and tank sides. What's that sticker on the right heel guard?
That's a DATATAG Sticker, security markings with a UV Dye on all bike parts, each bike has an individual marker.

4 wheels move the body, but 2 wheels move the soul.

1982 Honda CB750 BOL D'OR
2017 Kawasaki GTR 1400
2017 Suzuki GSX S1000

Last edited by Robbieben; 02-27-2019 at 04:50 PM.
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post #7 of 24 Old 02-28-2019, 06:36 AM
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Great looking bike. Interested in ur suspension choce as currently trying to make up mind between RaceTech n Ktech front forks - had RaceTech gold valve on previous bike and they were just superb, I'm guessing the Ktech offering will be equally good. I've also decided on Ohlins having looked at Nitron and others. As u might guess I am also interested in how the ecu flash goes on Thursday so I look forward to that update. Cheers.
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post #8 of 24 Old 02-28-2019, 10:30 AM
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Bike looks really good!

I liked the pics of the windscreen so much I ordered one yesterday even after being defiant I would never add such a thing to my naked S.

2016 GSX-S1000
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post #9 of 24 Old 02-28-2019, 03:20 PM Thread Starter
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Originally Posted by BorderReiver View Post
Great looking bike. Interested in ur suspension choce as currently trying to make up mind between RaceTech n Ktech front forks - had RaceTech gold valve on previous bike and they were just superb, I'm guessing the Ktech offering will be equally good. I've also decided on Ohlins having looked at Nitron and others. As u might guess I am also interested in how the ecu flash goes on Thursday so I look forward to that update. Cheers.
My rear shock is a one off, built to my spec by a friend who is an Ohlins Tech. The K Tech shock is very good, I know plenty of people who race on their shocks.

Quote:
Originally Posted by roy826 View Post
Bike looks really good!

I liked the pics of the windscreen so much I ordered one yesterday even after being defiant I would never add such a thing to my naked S.
It is beneficial, though probably more so here in the UK winter.

4 wheels move the body, but 2 wheels move the soul.

1982 Honda CB750 BOL D'OR
2017 Kawasaki GTR 1400
2017 Suzuki GSX S1000
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post #10 of 24 Old 02-28-2019, 04:47 PM Thread Starter
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Firstly thanks to Andy at J33 Developments for his work today.
Had the ECU/Flash, Remap today with some decent results though not perfect yet by any means. Details below.

I didn't have a base run in standard form but as we all know the 2018 model bike has 148 Bhp and 79 lbft torque at the crank. So "Rear wheel" Bhp will be around 132-135 Bhp.
Pic 1 shows results in 5th gear with my modifications so far giving 146.72 Bhp and 77.91 lbft of torque, these are "Rear Wheel" figures so my modifications have so far achieved about 11 Bhp at the rear wheel and the torque figure is about bang on being down 1.09 lbft on factory figures but there is the power loss through the drive train to consider here, fuelling though is really lean in the whole rev range and this is what is strangling the engine from making decent power. Note that fitting the M4 exhaust with much longer secondaries has removed the dip usually seen on dyno curves in the 4-5500 Rpm range, Hail longer secondaries.
Pic 2 shows tick over fuel at 14.0 AFR which is on the lean side.
Pic 3 shows 4700 Rpm, 60 Mph/100 Kph in 5th gear. 14.9 AFR..too lean
Pic 4 shows 5700 Rpm, 71 Mph/114 Kph in 5th gear. 16.3 AFR..worryingly lean
Pic 5 shows 6400 Rpm, 81 Mph/130 Kph in 5th gear. 15.3 AFR..worryingly lean
Pic 6 shows 7900 Rpm, 100 Mph/160 Kph in 5th gear. 15.2 AFR..worryingly lean
Pic 7 shows power at 15%, 20%, 40%, 60%, 80% throttle openings. as you can see very lean fuelling throughout the range and at all throttle openings.
Pic 8 Shows base run and final run results, 158.98 Bhp and 81.54 lbft so a decent gain of 12.26 Bhp and 3.63 lbft of torque with ignition and fuelling modifications added to my modifications, or 26.98 Bhp increase with all modifications and remapping so far over rear wheel power of a standard bike, final run results are not perfected yet as we have still had to leave fuelling on the leaner side to get the best results with the current exhaust configuration. Adding more fuel did not benefit increased power.

Current conclusions:

The M4 full exhaust works pretty well on the bike with the standard fuelling and ignition configuration but you will see from the graphs attached there are faults in the power delivery due to the shortness of the tailpipe/silencer combination which causes problems in two area's.
1. The bottom end on low throttle isn't smooth enough though not drastically bad and hardly noticeable with the standard fuelling and ignition maps that are limiting available torque.
Now the bike has been mapped it has exaggerated this effect and it is far more noticeable, though it can be ridden around.

2. Top end power though good is restricted due to pulse waves being generated again by the shortness of the tailpipe/silencer combination.

3. The next step is to fabricate a suitable link pipe to mate to the M4 headers and fit a different silencer, I need to add a total length to the pipework silencer combination in the region of 600 to 700 mm to see better results.

Riding the bike now the changes are really noticeable and it really has made a dramatic difference to the bike as it is now. Smiles per mile increased more than the power gains, that's for sure.

More to follow once further needed modifications are done and tested.
Attached Images
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PhuketPaul and temporarykiwi like this.

4 wheels move the body, but 2 wheels move the soul.

1982 Honda CB750 BOL D'OR
2017 Kawasaki GTR 1400
2017 Suzuki GSX S1000

Last edited by Robbieben; 02-28-2019 at 05:56 PM.
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