Launch controll

[Worbs 0]

Hi all been a premium member for a while but just been a lurker and only posted a couple of times.

Right the time has come to start modding my VR, iv got an m plate obd1 standard apart from hks mushroom filter (i had laying around the garage from a previous car). I want to s/c the car and was also thinking about fitting some sort of launch controll, something like the bee r limiter or similar i just wanted to know the pro`s and con`s of using this with an S/C fitted, would it be wise, worth while?.

I want to use the car on the quarter mile a few times a year not competivily just for my own enjoyment really.

Worbs 8-|

[rigs 0]

Nowt you can't do with your right foot... I'd not bother personally.

A basic rev limiter is not particularly useful unless you've got a turbo to spin up.

If faster times is what you're after there are loads of more significant changes you can make. The one that makes the largest difference is tyres. A set of sticky track cut slicks will get you anything up to a second and full on drag slicks will get you more. Then you've got shedding weight and increasing the power before aids such as a launch limiter become worth it. Up to you though obv.

With a SC you have instant throttle response so a launch limiter isn't going to be much more than a gimmick... in my opinion !

[xgordyx 0]

May also want to think of a lsd, planning one shortly for my vr

[Worbs 0]

I must admit i did think it would be more gimmicky than anything else, I v never driven an s/c`ed car before how to they compare to a turbo? i do love the surge of power a turbo gives you when hitting full boost, do you get that from an s/c?. I want to keep the car totally road legal an also use it regually, so loosing the weight will have to be kept sensible lol an i suppose i can carry a spare set of front wheels to any track maybe with some cut slicks so i will deffo consider these options, thanks rigs mate.

The vr so should of had a factory lsd, what would you be looking at price wise gordy for an lsd?

Cheers

Worbs 8-|

[sparkz 0]

Ive often used a Racelogic traction control system on one of our customers charged mk3 vr'6 and she was very happy with it. The throttle response was awesome on launch! Having driven hers numerous times, ive now invested in one to fit onto my mk2 vrt...

[rigs 0]

I must admit i did think it would be more gimmicky than anything else' date=' I v never driven an s/c`ed car before how to they compare to a turbo? i do love the surge of power a turbo gives you when hitting full boost, do you get that from an s/c?. I want to keep the car totally road legal an also use it regually, so loosing the weight will have to be kept sensible lol an i suppose i can carry a spare set of front wheels to any track maybe with some cut slicks so i will deffo consider these options, thanks rigs mate.

The vr so should of had a factory lsd, what would you be looking at price wise gordy for an lsd?

Cheers

Worbs 8-|

[/quote']

There's no doubt a good system can do wonders for your times... but where's the challenge in that? I'd MUCH rather be going:

"I did a 13.5 thanks to a flawless launch - pat on the back for me"

than

"I did a 13.5 thanks to a flawless launch - because the computer was driving"

You may aswell buy a computer simulator if you want to start removing the human element in it.... yawn.

There is no boost surge with a supercharger... it's just a nice build up of power all the way up. Different types/sizes of chargers are stronger in different areas... rotrex give huge top end power but relatively weak midrange and others give more of a midrange shunt but have a poorer top. There is no surge as with a turbo... but then you don't have any of the downsides either!

The VR doesnt *need* a lsd from the factory at all. I ran a 200hp vr powered mk2 track toy on road tyres for years without a diff and it was great. I never thought "I need a diff" They are good though! Worth a few tenths down the strip.

Peloquins seem to be coming in at around £700-800 at the mo due to rubbish exchange rate etc... Similar price to a quaife + fitting kit but I'm told reliably the peloquins are stronger.

[FishWick 21]

Ive often used a Racelogic traction control system on one of our customers charged mk3 vr'6 and she was very happy with it. The throttle response was awesome on launch! Having driven hers numerous times' date=' ive now invested in one to fit onto my mk2 vrt...

[/quote']

I like the look of that system. Where did you install the Hall sensors for driven and undriven wheel detection?

The VR doesnt *need* a lsd from the factory at all. I ran a 200hp vr powered mk2 track toy on road tyres for years without a diff and it was great. I never thought "I need a diff" They are good though! Worth a few tenths down the strip.

Agreed' date=' although they are fun in the corners :-)

Peloquins seem to be coming in at around £700-800 at the mo due to rubbish exchange rate etc... Similar price to a quaife + fitting kit but I'm told reliably the peloquins are stronger.

I think for that money the Autotech Wavetrak is worth a look as a good alternative.

I've not heard of either a Peloquin or a Quaife breaking through normal road use, but have heard of both breaking in track use, particularly if slick tyres are used. But then slicks have been known to break geaboxes and driveshafts on standard power, let alone ATB diffs!

[Phat VR6 3]

Think you can run the racelogic off the standard ABS exciter rings.

what does it feel like when it cuts in? like when you hit the rev limiter or does it just do its job and you hardly no its there

[FishWick 21]

Exciter rings, LOL, sounds like some kind of sex toy :-)

The VR6 ABS sensors are inductive, and most aftermarket TC systems need hall sensor signals, so I'll email Racelogic to see if their system supports them and what the interface with the factory ECU consists of.

The Racelogic system retards ignition and a good system is obviously invisible to the end user, but keen drivers will detect the power being cut.

It works better than wheel braking type TC systems imo, not as aggressive and nannying, plus the RL's severity is switchable.

[Phat VR6 3]

i don't think you can double up and use the same sencer for abs and TC, you have to add the tc sencer in somewhere, although i don't think theirs space unless you loose the abs.

from what i understand the fronts can be done off the inner CV bolts but the rears i have no idea. maybe use extra long wheel bolts so they poke though the back of the disc/ hub enough to get the sencer to read them

As long as it was smooth i think its a great idea, ive seen a few vrts on youtube that just wheel spin instead of moving forward lol a lot of wasted bhp

[Worbs 0]

Thanks for your opinions guys, not sure what im going to do as of yet, My water level warning light came on yesterday checked my coolent the bottle was empty! topeed it up an ran the car to look for a leak found one some where at the front of the engine but also my coolent is really frothing up like it has washing up liquid in it!!! not a good sign! going to get a hydrocarbon test done asap and a compression test but i reckon the head gasket`s gone.

Bloody typical as soon as i start to look into tuning the dam thing, oh well could be the perfect excuse for some head work maybe lol.

Cheers

Worbs 8-|