Testing Boost Video, slight problem

We ran 1.2bar for a while and the car pulls like a train through all the gears without a problem, We then decided to go for 1.6 bar, all 530bhp. The car just could not get any grip, on full throttle. I had to back off a bit just over half throttle to get grip on the rear tyres.

When running 1.2bar the speedo climbs fine. But when i switch onto 1.6bar, then this is what happens see video below.

Any idea's guys??

Whats the state of your clutch like? Could be it slipping. It tends to show up when in the higher gears due to the torque.

Whats the state of your clutch like? Could be it slipping. It tends to show up when in the higher gears due to the torque.

Brand new southbend clutch dude, be lucky if its done 1000 miles yet??

It may well be your hitting warp factor ten without realising it.

I heard southbends can creep but then i would have thought it less likely to slip.

Tyres all good?

My old supra used to do this on occasions. Never got round to fixing it, I assumed it was down to a crappy speed converter. I was only running BPU 1.2bar

It may well be your hitting warp factor ten without realising it.

I heard southbends can creep but then i would have thought it less likely to slip.

Tyres all good?

Brand new Falken 452's on the rear, dont think the clutch is slipping TBH. id feel it straight away.

My old supra used to do this on occasions. Never got round to fixing it, I assumed it was down to a crappy speed converter. I was only running BPU 1.2bar

Only does it running 1.6bar though, running 1.2bar the speedo climbs fine.

No idea whats going on here??

Brand new Falken 452's on the rear, dont think the clutch is slipping TBH. id feel it straight away.

 

 

 

Only does it running 1.6bar though, running 1.2bar the speedo climbs fine.

 

No idea whats going on here??

It only did it occassionally. I sold the car to Trinitom who is a member on here. Ask him if the problem still persists or if he resolved it.

If the clutch were slipping the revs would rise & the speed would remain, here the speed rises & the rpms climb slowly, looks like electric problem on the speedo/speedo signal IMHO

If the clutch were slipping the revs would rise & the speed would remain, here the speed rises & the rpms climb slowly, looks like electric problem on the speedo/speedo signal IMHO

Was about to say the same. I can't see it being the clutch!

My money is on your speed convertor being unable to compensate for the increased level of acceleration. If you watch when you boot it at 110mph, the needle jumps to 180, 180kmh is around 110mph, so it looks like the convertor is reverting back to what the stock speedo would read if it had no converter fitterd, I hope this makes sense.

My money is on your speed convertor being unable to compensate for the increased level of acceleration. If you watch when you boot it at 110mph, the needle jumps to 180, 180kmh is around 110mph, so it looks like the convertor is reverting back to what the stock speedo would read if it had no converter fitterd, I hope this makes sense.

Now that makes sense, nice one bud.

Right how do i compensate for this then?? is it a case of replacing the converter???

did we fit your converter mate if so back then we used old supplier , now we have a new range that we use on all big singles with no issues , so i think the old one is capput for high boost levels..

if your passing here we will fit one for free mate.

Right how do i compensate for this then?? is it a case of replacing the converter???

Wack a new one on it matey

 

if your passing here we will fit one for free mate.

Now there, is customer service ladies and gentlemen.

did we fit your converter mate if so back then we used old supplier , now we have a new range that we use on all big singles with no issues , so i think the old one is capput for high boost levels..

 

 

if your passing here we will fit one for free mate.

yeah bud, been in since you installed it. running no problem.

WOW mate thats really good of you. you do know how to keep your customers happy. Although i doubt i'll be down anytime soon mate, not unless you can send me one, and i'll get Ian to fit it, who did my build??

yeah bud, been in since you installed it. running no problem.

 

WOW mate thats really good of you. you do know how to keep your customers happy. Although i doubt i'll be down anytime soon mate, not unless you can send me one, and i'll get Ian to fit it, who did my build??

ok bud no problem will post one out to you. am sure over the last 4 years you have recommended me to others so ..

free speedo chip:D

ok bud no problem will post one out to you. am sure over the last 4 years you have recommended me to others so ..

 

 

free speedo chip:D

he he, still got your Jm-Imports Reg plates on dude, so free Advertsing for you.

Jurgen thanks ever so much bud, you didnt need to do that, really. If it dont work i'll post it back to you.