whilst using a private track ( very similar to the M5 J7-J8 ) my car pulled very well until the speedo read 265kph then all turbo boost dropped off so i backed off and the same thing happened when i accelerated again is this my geared speed or is the sudden drop in boost another problem ? 93 j-spec tt auto :x: :bow: ( i feel the need for speed )

Sounds like your speed restrictor kicking in (UK zed limited to 155mph 249kph). Get it de-restricted and thereticly a manual will do 186mph (299kph) or an auto 201mph (323kph).

just noticed you have j spec, they are limited to 112mph so that does'nt help.

Im a little confuesed.

 

Your speedo reads 265Kph? So you have a Nismo speedo on it? Is it a UK or Jap?

thereticly a manual will do 186mph (299kph) or an auto 201mph (323kph)

 

down a humungous 10 mile 1 in 10 hill:)

down a humungous 10 mile 1 in 10 hill:)

 

LOL. I've done 177mph on a level road (obviously on a track) and there was still power left in it:) I was too scared to go any faster though. :(

Sounds like your speed restrictor kicking in (UK zed limited to 155mph 249kph). Get it de-restricted and thereticly a manual will do 186mph (299kph) or an auto 201mph (323kph).

 

tune it & raise the rev limiter & it'll go even quicker. theoretically ;) :D

I've done 177mph on a level road (obviously on a track) and there was still power left in it

by Homebrew

 

Well if you've got a proven 400bhp it's possible but I would guess that 177 on the clock might really only be 160/165ish real speed with the kind of error you see over 100. Its all debateable but an unrestricted stock will top out pretty close to 160mph true speed.

well as it says in the thread its a j- spec tt auto red of course ( i heard there the quickest ) :tongue:

well as it says in the thread its a j- spec tt auto red of course ( i heard there the quickest ) :tongue:

 

You heard wrong!!

well as it says in the thread its a j- spec tt auto red of course ( i heard there the quickest ) :tongue:

 

 

you are completly right dear fellow minus the auto though ;)

by Homebrew

 

Well if you've got a proven 400bhp it's possible but I would guess that 177 on the clock might really only be 160/165ish real speed with the kind of error you see over 100. Its all debateable but an unrestricted stock will top out pretty close to 160mph true speed.

 

I have a proven 325bhp at wheels by thore (390 at fly). When I did this run the speedo was a smudge below 180mph and the rev counter was near the red line so I think it was near enough 177- 180mph and it was still accelerating! :shock:

I hit the 155mph limiter in mine before it was chipped/de-restricted.

Now it's just frightening! 155mph is far too fast for me, just safe

in the knowledge that it will go faster if i ever need it to!

Obviously mines the faster version 'cos it's yellow. :tongue: