gsf 750 bandit slow as f*$k

[devojunior]

hello, lads and lasses.

went with a mate to pick a suzuki bandit 750 up yesterday very clean and well looked after he paid a £1000 for it and its ideal for his first bike,

i test drove it around the streets and drove it home for him as it was 2 mins around the corner, anyway we went to olivers mount today and we went in a 1.7 diesel astra and he went on his bike and he kept saying how slow it was so we said go flat out redline upto all gears see what she does and we blew him in the astra which we all thought was deffinatly not right he said the bike splutters when it hits 9k and will top out at 110 120 mph and after a quick google it seems the 750 was an import and restricted to limit revs at 9k and top out at 120 ish which it does.

has anybody any idea how to de restrict it as the interweb shows bugger all , im guessing a snip of a wire to ecu will be all thats needed but need to find the right one to do any info would be great cheers.

"sorry for shitty writing"

[P.]

[sidewinder]

Bandit 750 was a Japanese only model.a bit of a 600/1200 hybrid

[devojunior]

yeah from what iv read online the 750 was a mix match of all the bandits and made for japan or somewhere and were restricted, i just cant find out how i know its electrical as it is limited to 9k so im guessing the cdi,

from a quick google search the bandit cdis are all interchangable ut cant find any solid topics on it.


no pics as a blandit isnt pic worthy. although theres vids of the astra pulling away at 120

[Bezzer]

If it is a true Japanese home market 750 then the restriction is in the speedo that limits it to 180kph-112 ish mph. Sends a signal at that speed to the CDI and won't let it go over. You'd have to do a search to see the various methods you can use to override it or find a plug in box for it. Well documented for the smaller models GSXR4000 etc but it might point in the right direction for the rarish 750.
If it's got kph clocks the easiest way round it is to get a speedo cable converter and mph overlay for the speedo so it reads in miles it would't kick in then until you're doing 180mph

Jap 750s were also restricted to 77bhp , might also have different CDI and/or physical restrictions as well so you possibly wouldn't get a full power 750 with the speedo mod alone
____________________
I used to be indecisive but now I'm not quite so sure.

[sidewinder]

Bandit 750 was a Japanese only model.a bit of a 600/1200 hybrid

[devojunior]

yeah its got kph clocks with a "jigadymabob" that makes it read correct mph, not sure about the wire from clocks to cdi though.

[P.]

It was a pain to derestrict my Jap TL1000S, different inlets, power commander and a TRE, more hassle than it was worth.

[Vincent]

According to Wikipedia, the 750s are easily de-restricted......it fails to say how tho Apparently they are capable of 140 mph once done. If it's just got the Japanese top speed restriction, it should still accelerate ok......maybe some donkey has fitted a 33BHP kit on it?
____________________
Space Is Deep

[devojunior]

[_Iain_]

Is this the utterly fucked red shed that was on Ebay a few weeks ago?
____________________
Please be aware that the above post may be full of complete nonsense.
Riding: '07 KTM Duke II, Baotian BT49QT-20 Driving: '88 Volvo 340

[devojunior]

[Suntan Sid]

Have you taken the inlet rubbers out and had a look inside?
I had an "import" CBR600, the restrictor plates were moulded into the rubbers!
I had to buy a new set of unrestricted inlets!
____________________
"Everybody needs money, that's why they call it money!"

[P.]

[Pete.]

I've seen similar. They even manage to make them so it's hard to cut them out sometimes too.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[devojunior]

not touche dit yet not had time but cant see how the carbs can restrict rev limiter to 9k , its not just bogging down you can here it bounce off the limiter as they say at 9 k as if its doing 14k so its electricaly restricted i dont just mean generally slow it goes like normal but revs just come to a stop at 9k and when your in 6th flat out at 9k your only doing 120.

before then it goes pretty well.

[P.]

https://img.photobucket.com/albums/v487/fiche-man/Throttlebodies/tl1000_manifold_restriction2.jpg

Took me a good few hours to cut through those inlets and get them tidy.

[Vincent]

If the bike can't out accelerate a diesel Astra, it suggest something more than just the rev limiter used to comply with Japanese "Top Speed" legislation.
____________________
Space Is Deep

[hmmmnz]

alot of the 750 jap imports had a number of restrictions, not just a speed restriction.
*cdi restricted, replace with a gsxr750/bandit 6/12 cdi
*intake restrictors. replace or carve out the restricted one
*carb, these were often jetted quite lean etc
*exhaust, sometimes there was a restrictor welded into the top part of the exhaust, worth checking to see if its there

if it was me, i would buy a gsxr750 set of intakes, cdi and rejet to suit the slabby/slingshot specs or chuck a set of gsxr750 carbs in
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[Suntan Sid]

Here are the restricted inlets from my CBR:-

https://i645.photobucket.com/albums/uu172/Troodos-Pool-Guy/CBR600CARBS.jpg

Trying to remove them would have been impossible, without, seriously, damaging the rubbers!

The bike had a none Honda CDi fitted, when I bought it, the speedo went up to 180kph, (111mph), but you could carry on accelerating passed that, the red warning light, on the speedo, still came on but had no effect on performance.
____________________
"Everybody needs money, that's why they call it money!"

[devojunior]

hello, seems i worded it abit wrong, what i meant was we were already doing a ton in the astra along side the 750 then both floored it the 750 shot off to about 110 120 where the astra crept past eventually and the 750 couldnt get past the 120 mph mark.

im going to order him a cdi, that will eliminate that and the exhaust is an art can so unless theres something befor ethe can to restrict it we can elliminate that also,

i will get the carb rubbers off and see what the crack is with those.

cheers for the help lads.

[hmmmnz]

if they have restricted the exhust, its right at the headers, just as it comes out of the engine,
if it has tubes welded in there you can normally get them out by grinding away the welds and removing the tubes
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[devojunior]