Short speed run clip (roughly 70-170) & some gremlins

**Silverbullet S4** · 11-14-2016 01:13 PM

I recently took the S4 on it's first long road trip (video in Mexico of course) and had the opportunity to really open her up on some of the loooooong open roads that were straight for miles. For those that freak out about speed runs on public roads in Mexico, understand this may as well have been a closed course. Visibility for miles and no signs of life. With that disclaimer out of the way, she pulled like a champ up to around 140mph and then went into a fairly steep uphill grade in the video. Still ended up around 165-170mph (indicated, not actual) and the car felt absolutely planted. Past vehicles (C32, E55, E60 M5) all seemed to get pretty lose over ~140mph, but the S4 was glued to the road. Only aero mod(s) per se are the deval rear spoiler and diffuser.
I also had a chance to play with a kid on a stock GSXR 750. He didn't believe there was a V6 under the hood. I would have lost a bet if you told me our little V6 would walk a 750!

On the return trip, I'm all set to head home and my MMI screen is blank when I try and use the nav. Everything worked (phone, media, radio, etc.), just couldn't see anything, to include the backup camera. Thank god for google maps and phone app because even trying to get to nav through voice commands just told me it wasn't available. In looking at past posts from others with similar problems, they had a Bluetooth module that seemed to go out but, mine works fine. Another suggestion was to force reboot (hold Tel, center knob and upper right button) and while that seemed to work for some, no luck for me. Several restarts over the long trip and never got it to come back to life. Nearly a week later and on the drive in to the office today, it all the sudden started working again as though nothing was ever wrong. Glad it's working again but seems odd that it went dead out of the blue and was just as randomly resurrected. Let it ride or document it now with the dealership before warranty runs out?

Last odd gremlin came when I was 3hrs into the return journey and had the cruise set at a constant speed for the past couple hundred miles. Went to bump the speed up with the cruise control stock and as soon as I hit up/+, it surged forward and immediately kicked off the cruise, EPC light came on and I had no throttle. Pulled over and was afraid I threw a belt in the middle of BFE but everything looked good under the hood other that a really rough idle. Turned it off and when I restarted, everything was fine (minus the MMI still being out at that time). No issues since but, that was a pretty sinking feeling being stuck on the side of the road in the middle of nowhere with many many miles still to go. Luckily it all worked out. I have a code reader I need to dig out which will hopefully tell more of what was going on. Anyway, just some random thoughts and observations from a ~2500 mile road trip...

**Whitee** · 11-14-2016 02:13 PM

Awesome video and story and all....but you won't walk a 750 if the rider can remotely ride, not even close. Comparing a 9 second bike to a 12 second car....

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**Trent212** · 11-14-2016 02:14 PM

Surprised it would do 170, mine falls flat around 166-167 and doesn't want to go any further.

Be safe out there man, anything can happen and when you least expect it! Check them tires every now and then. And if you drive that fast often worth getting an alignment done.

**Silverbullet S4** · 11-14-2016 02:27 PM

Originally Posted by Whitee

Awesome video and story and all....but you won't walk a 750 if the rider can remotely ride, not even close. Comparing a 9 second bike to a 12 second car....

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Having owed several bikes (600-liters) and currently own a Z1000, I would have said the same had I not witnessed it. And I'm not talking 1/4 mile runs from a dig. We were doing pulls anywhere from 50-70 on up. Bike seemed to top out around 140/150 and was getting walked/reeled in from 90+. No idea regarding rider level...quick chat at a stoplight and we were both surprised.

**whiped** · 11-14-2016 02:31 PM

Originally Posted by Trent212

Surprised it would do 170, mine falls flat around 166-167 and doesn't want to go any further.

Be safe out there man, anything can happen and when you least expect it! Check them tires every now and then. And if you drive that fast often worth getting an alignment done.

My car did 18X last July. Rarely get it above 140 so haven't tested it recently.

This was done on a slight down slope on fresh pavement in probably 60-70 deg weather.

**volyer** · 11-14-2016 03:09 PM

Originally Posted by Whitee

Awesome video and story and all....but you won't walk a 750 if the rider can remotely ride, not even close. Comparing a 9 second bike to a 12 second car....

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Yep. Otherwise good content OP, not trying to rain on your story. I have had 600's through 1000's, and a newer year 750 will embarrass a b8.5 even with mods. They trap 135+ mph and don't stop pulling until 175-180. Dude may have had it on the "C" map or whatever they call the low power mapping these days though.

**Sceanzo** · 11-14-2016 05:09 PM

I own a GSXR 600 and an APR Stage 2 b8.5. I can attest the bike will slaughter it as I have ran them against each other with a friend.

**RLB6** · 11-14-2016 05:43 PM

Originally Posted by Sceanzo

I own a GSXR 600 and an APR Stage 2 b8.5. I can attest the bike will slaughter it as I have ran them against each other with a friend.

Then I'd say your S4 is not running very well and you may need to scan it for codes or something. I used to walk down 600s in my B6, stage 3

**Dirt** · 11-14-2016 06:07 PM

Not a chance a Stage 2 will hang with even a 600 if the rider is worth a crap. My bone stock 1998 ZX-6R (yeah I'm old) ran 11.2's at 125 mph all day long in the summer. That was almost 20 years ago, and I'm reasonably confident today's bikes are quicker.

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**KnewJack** · 11-14-2016 06:51 PM

Suzuki Speedos and most sport bikes for that matter are about 12% optimistic (Kawi's avg. 8% optimistic). I've owned more than a few Gixxers 600-1k. Current machine is a Kawi ZX14R. The 600's will get to 120 pretty quick, but lose steam pretty fast at that point. They will creep to an indicated 170 which is an actual 149 or so. 750 can pull about 10-15mph more but suffer from the same diminished higher speed performance. Having the aeros of a brick doesn't help. Very possible to run down a 750 after 130-140 with a stage 2 S4. I've done it in my Talon when I only had 420whp. GSX-R 600 is only geared for an actual 155mph and that not accounting for tire slip, 750 is geared for 172mph again not accounting for tire slip.They will leave you bad from lower speeds, but the advantage goes quickly with higher speeds. I've seen video of a stage 2 without TCU tune S4 topping 185+mph. I've seen 170+ in mine with more in it for sure.

**Whitee** · 11-14-2016 07:22 PM

Originally Posted by RLB6

Then I'd say your S4 is not running very well and you may need to scan it for codes or something. I used to walk down 600s in my B6, stage 3

Again, really any remotely newer 600 will put a hurting on even the fastest S4 from lower speeds. Sure if you're going 130mph I could see the S4 start to walk. You have to realize most newer bikes are 9 and 10 second bikes stock....

Let's look at a 10 year old 2007 gsxr 600 for example. 10.7 @ 133 stock....

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**Silverbullet S4** · 11-14-2016 07:49 PM

Guys, as I've said a few times now...the runs with the bike were all high speed highway runs. Not quarter mile and not from a dig. It was just a small aside as I too was surprised by the results. Not trying to turn this into a debate...

**schirm** · 11-14-2016 07:54 PM

why does your tack only go to 160? I have hit 180 in my car in similar conditions.

**KnewJack** · 11-14-2016 08:00 PM

Originally Posted by Whitee

Again, really any remotely newer 600 will put a hurting on even the fastest S4 from lower speeds. Sure if you're going 130mph I could see the S4 start to walk. You have to realize most newer bikes are 9 and 10 second bikes stock....

Let's look at a 10 year old 2007 gsxr 600 for example. 10.7 @ 133 stock....

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I think that record pass was run by my boy Pee Wee. That was probably stock height and no strap. He can ride his ass off and is about 135 suited. That is a hell of a pass. Average gorilla Joe be lucky to pull off an 11.7. That's def stage 2+ S4 territory, at least from a dig.

Average gorilla Joe!

https://www.youtube.com/watch?v=RyDydU1bX08

Can't make out the time but judging by the time he launch and the win light, looks to be a mid 12. Not adding to the debate just amazed at what a skilled and non skilled rider difference in time can be.

**jsh139** · 11-15-2016 05:40 AM

Originally Posted by schirm

why does your tack only go to 160? I have hit 180 in my car in similar conditions.

Audi changed it for the B8.5 cars.

**MrFunk** · 11-15-2016 06:48 AM

Originally Posted by Silverbullet S4

Guys, as I've said a few times now...the runs with the bike were all high speed highway runs. Not quarter mile and not from a dig. It was just a small aside as I too was surprised by the results. Not trying to turn this into a debate...

Dude was prob short shifting and starting out in too high a gear.
I agree though that these cars are deceptively quick and you can catch people off guard. Especially dudes on Harleys and other "slower" bikes.

**hotleadsingergu** · 11-15-2016 12:18 PM

Originally Posted by Silverbullet S4

Having owed several bikes (600-liters) and currently own a Z1000, I would have said the same had I not witnessed it. And I'm not talking 1/4 mile runs from a dig. We were doing pulls anywhere from 50-70 on up. Bike seemed to top out around 140/150 and was getting walked/reeled in from 90+. No idea regarding rider level...quick chat at a stoplight and we were both surprised.

Ya, there was something wrong with that bike. My current ZX6R 636 tops out around 172. The 750s were notorious for being over-powered for their engine-size, with a 0-60 time of like 3.2s (IIRC).

**Silverbullet S4** · 11-15-2016 02:21 PM

If anything I would blame the rider more than the bike but either way... So is that 172mph via GPS or digital speedo? My old 600 RR would read close to that on the speedo. When checked, it was reading almost 10% high compared to GPS. I have never had a bike that was better than 5% off actual and always reads high. 0-60 time is irrelevant for the scenario I laid out.

**KnewJack** · 11-15-2016 02:49 PM

Originally Posted by hotleadsingergu

Ya, there was something wrong with that bike. My current ZX6R 636 tops out around 172. The 750s were notorious for being over-powered for their engine-size, with a 0-60 time of like 3.2s (IIRC).

ZX6R 636 speedo reads about 10% high. That would be an actual 155mph. With the stock 16T front sprocket and 43T rear sprocket, the bike is out of gear at about 156. If you are running a taller rear tire you may squeeze a couple more mph out of it. Very nimble machine though. 1st thing I do with any bike I own is add a Speedo-Healer to correct the optimistic speedos. I like to know how fast I'm actually going. If I see an indicated 90 and I'm barley passing traffic, I'm like WTF? Lol.

Originally Posted by Silverbullet S4

If anything I would blame the rider more than the bike but either way... So is that 172mph via GPS or digital speedo? My old 600 RR would read close to that on the speedo. When checked, it was reading almost 10% high compared to GPS. I have never had a bike that was better than 5% off actual and always reads high. 0-60 time is irrelevant for the scenario I laid out.

Did you ever figure out what caused the gremlins or get them sorted?

**Whitee** · 11-15-2016 05:14 PM

Just raced a ZX14R tonight and the rider fell off when the bike wheelied. Still won doe!

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**Dirt** · 11-15-2016 07:01 PM

A lot of discussion about the inaccuracy of a bike's speedo......how far off is the average S4?

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**KnewJack** · 11-15-2016 07:02 PM

Originally Posted by Whitee

Just raced a ZX14R tonight and the rider fell off when the bike wheelied. Still won doe!

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Lol! That's one way to win.

**Silverbullet S4** · 11-15-2016 08:19 PM

Originally Posted by Dirt

A lot of discussion about the inaccuracy of a bike's speedo......how far off is the average S4?

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As long as you're running rim/tire within spec, they're very accurate. Under 120mph, digital speedo is within 1-2mph of GPS speed.

**KnewJack** · 11-15-2016 08:20 PM

Originally Posted by Dirt

A lot of discussion about the inaccuracy of a bike's speedo......how far off is the average S4?

.

According to my GPS the S4 speedometer is dead on. Measured at 100mph and 150mph just like on my bikes. 100mph indicated on my ZX14 before speedo-healer was 92 actual. 150 indicated was 138 actual. You use this info to set up the Speedo-Healer to correct errors and compensate for sprocket changes if need be. My old 2010 gixxer 1k and 2005 Hayabusa had almost pretty much the same error ratio. 100mph indicated being 88mph actual on the 1k and 86mph on the Busa.

**Dirt** · 11-16-2016 02:51 AM

Thank you both. Good info.

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**Ze_Nardo6** · 11-16-2016 10:03 AM

Originally Posted by Whitee

Just raced a ZX14R tonight and the rider fell off when the bike wheelied. Still won doe!

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LMAO

**Silverbullet S4** · 11-18-2016 07:52 AM

Well, we had out first cold spurt hit last night and on my way home from work, the screen went out again. Only common thread was cold, wet/humid conditions when the screen went out. Still out after sitting in a warm/dry garage all night. Time to take it to the dealership I guess...