nope not at all. bhp is whats needed to get a top speed,,, getting there quicker is about torque vs bhp but the actual topspeed is the bhp,,,, if your car runs out of power the cars natural rev limit kicks into play and the car wont go any faster, add some head wind or a hill and it will slow down

i know this as i fitted a 5 speed box to a 1,3 escort years ago and i couldnt get it to the same top speed as i could with the 4 speed box....... and that was 113mph and it took me almost from stanstead to the M25 to get there

 

My stock 97 wrx bounced off the limiter in 5th gear a few days after i picked it up

 

at the upper end of 3 figure speeds the car feels scarily stable, enticing you into more......but the thing I have noticed with a prodrive setup and prodrive competition suspension is that there's no warning when it goes.....grips grips grips...gone.....

puts you off a little..!!!

the other thing is, mine sounds like a herd of elephants stampeding at full chat...so deffo not stealthy at all, Anyone would hear me on a mission from 2 miles away..LOL

 

168mph on the gps in mine with a wind up the **** i might add, tbh its not a speed i like visiting often. i have no shame in saying that its quicker than you'd want to go for normal driving

 

164mph/7400rpm in 6th on GPS at same 40-50mph headwind affected airfield day that Steve bt was on. 450bhp rcm P1 with spec C 6 speed fitted.

Edit to say that at an indicated by speedo 160mph actually equalled 148mph on gps. When I got to 164 on the GPS the speedo needle was pointing straight down i.e. miles past the 160mph speed marking

 

2.5 WRX PPP 143mph on GPS... very dissapointing!

 

Anyone else get excessive bonnet/scoob wobble about 155+? Scared my bonnet is gonna fly open!

 

Yep..the scoop looks like it's about to made a bid for freedom!!

 

02 wrx ppp 125 on gps in 4th whilst mapping would have gone for 5th but was running out of dual carriage very quickly

 

No problem,RCM WR1.

 

got a 93 wrx import got to 130 before my engine check light came on

 

I started another thread on this recently looking for some advise on how to hold it down. No help yet though. :0(

 

Get rid of the bonnet scoop, all your problems will be solved!

Banny

 

wow alot of you are getting more true readings from gprs compared to your car, ie your car is showing more.

i removed my speedo cable and took the car for a spin (i still have limiter fitted so this removes it while unplugged, im cheap!!)

i used a road angel to monitor how fast i was going and i hit 160mph in my sti v3 with a few mods. but i have no way of know what is right or wrong though

 

All cars can reach their top speed given a long enough stretch...

I had a GPs reading of 172 in my old bug.

 

True, true!

 

Chunk!! you have just owned me, I swear that I got a 999 once in a 30 but I didnt get a picture.

 

Sorry about that We have had 175mph at Bruntingthorpe on a charity track day with 4 up,car was running 487bhp.

 

So if I ditched the bigger scoop I currently have now, and went for a reverse scoop, would this help with the concerns people have with regards to sustained high speed runs in 5th-6th?

I started a thread in Gen Tech regarding speeds above 100mph and the dangers of the engine blowing. In that thread the conclusion was that its oil starvation at sustained speeds which causes the engine to go pop, whilst running high revs in a high gear. How can this be avoided though? I asked about a FMIC but is that the only possible solution to this? I dont know....

I'm still trying to come up with a solution for safe, sustained speeds above 100mph without spending every second thinking its gonna blow any second lol. Any advice?

 

Blobeye WRX wagon with around 330bhp, car didn't seem to have much more but had to break as roadworks were coming up (very quickly) on the autobahn

 

Oddly my speedo VS GPS is about 1% fast !

dunx

 

0-169mph in 19 seconds & 1km A few choice mods obviously