Jump to content
SAU Community

WTF...R32 GTR Speed limited..!..?

PSI_GTSII
 Share

Recommended Posts

PSI_GTSII Experienced

PSI_GTSII

Posted
Posted

Had a bit of a play last night with an 04 STI WRX.

Top of 4th I hit what I thought to be the rev limiter, no worries, change to 5th....still on some sort of limiter...which I am presuming is a speed limiter..?

That sucks...how do I get rid of it...?

Link to comment
https://www.sau.com.au/forums/topic/75954-wtfr32-gtr-speed-limited/
Share on other sites
sav man Grand Master

sav man

Posted
Posted

it's a 180km/h limitor, you can change/chip the ecu, cut the speed sensor wire (not recomended), or get a HKS speed limit defector. Mine has the speed sensor wire cut (like that when i got it :) ), and it roots up the HICAS.

Amaru Veteran

Amaru

Posted
Posted

All JDM cars of that era have 180km/h speed limits, even the R33 and R34 have them. Two options;

Do the dodgy and cut the speed limit sensor wire thing (#53 from memory, I could be wrong though...)

Get an aftermarket/chipped ECU.

gtrken Grand Master

gtrken

Posted
Posted
Had a bit of a play last night with an 04 STI WRX.

Top of 4th I hit what I thought to be the rev limiter, no worries, change to 5th....still on some sort of limiter...which I am presuming is a speed limiter..?

That sucks...how do I get rid of it...?

Speed limiter.

Get an Apexi power FC or some other aftermarket puter.

Bring it in for a dyno tune/remap and we can remove the limiter, raise the revlimit etc and tune the car for $800.

No point buying an aftermarket limit device when it can be taken out.

gtrken Grand Master

gtrken

Posted
Posted
Hmmm...have to do something!

With only a Boost increase you'd be close to hitting the limiter before the end of 400m :)

very close, depends on the launch.

Speed limiter is usually about 200kmh which is about 120mph.

near stock GTR's won't normally get there.

Cheers

Ken

wrxhoon Grand Master

wrxhoon

Posted
Posted
very close, depends on the launch.

Speed limiter is usually about 200kmh which is about 120mph.

near stock GTR's won't normally get there.

Cheers

Ken

All jap cars are limited at around 180 kmh ( usualy 185 or so ) .

Bog stock gtrs will hit the speed cutout very easy and depending on model ( if you dont have the limiter ) will go on up to 250 kmh ( r34 gtr ) .

I took my stock 34 to the drag strip ( only mod , catback exhaust ) and i hit the cutout in 4th just after the 400 mt finish line .

Adrian Knack Contributor

Adrian Knack

Posted
Posted

You can remove the speed limiter by reprogramming the stock ECU if you have a EPROM writer and know which field to change.

Easiest way if you are not confident with such things (I personally would not want to suff my GTR if I had one) is to take it somewhere who does Performance tuning and ask if they car re-write your stock ECU. Should cost next to nothing.

Cheers

Adrian

psybic Proficient

psybic

Posted
Posted

The limiter is definatly alot closer to 200 than 180. I have hit it more than once and I can tell you its pretty close to 200, can't be sure cause the speedo only reads to 180, but its WAY past that.

I like it though, enforce me to "keep it real"

wrxhoon Grand Master

wrxhoon

Posted
Posted
The limiter is definatly alot closer to 200 than 180. I have hit it more than once and I can tell you its pretty close to 200, can't be sure cause the speedo only reads to 180, but its WAY past that.

I like it though, enforce me to "keep it real"

They are under 190 k and you can tell by your tacho what speed you are doing .

sav man Grand Master

sav man

Posted
Posted

Well the power stearing gets stuck in 'high speed mode' (heavy round town), The HICAS light comes on after 5 mins (and stayes on), I don't think the HICAS tryies to turn the rear wheels, but it dosn't stop them from moving eather, on big 80km/h round abouts you can feel it move at max g's. I'm trying to find where it's been cut.

GTRgeoff Grand Master

GTRgeoff

Posted
Posted
They are all under 190 k Duncan . 265x35x18's are about 3 % bigger than stock so you are going 3% faster .

On GPS mate. It don't care how big the tyres are, but they are accurate. Admissable in NZ courts now.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • MBS206
      Mistakes were made, my R34 Story

      By MBS206 · Posted

      In a few years from now, you'll regret that. It'll eat away at you, knowing the truth of the ugly hiding beneath the beautiful exterior... 😛
    • joshuaho96
      R32 GTR - Where to begin

      By joshuaho96 · Posted

      I don't think the G2 profile is particularly dangerous for the engine per se, more just are you actually ok with the turbo lag trade-offs? If the answer is yes then go for it. I personally don't think I'd be ok with it because I spend so much time at lower RPMs and I really enjoy the feeling of being able to stay in 5th gear on the highway and just roll into the throttle to get boost. Or staying in 3rd gear on "gentle canyon cruises" without feeling the turbo lag too badly. The 525 pump should be able to run flat out on factory lines but I would bet the pressure drop from pump to regulator is quite impressive. I don't know how much it would be exactly but I've seen figures like 30 psi thrown around.
    • Murray_Calavera
      R32 GTR - Where to begin

      By Murray_Calavera · Posted

      It's interesting seeing everyone talk about what level of risk they are happy to tolerate.  Building a GTR always has a level of risk, you could be that lucky guy that drops 20k on the engine build alone and still has the thing go pop on the dyno. Life is fun like that.  The way I see it, the thing is a toy to be enjoyed. I'd be happy to turn up the power on stock motor and limit the risk with sensible tuning and engine protection. If it still goes pop, it is what it is. The car isn't a daily driver so it can happily sit while a plan is made to sort it out.  Given this thing will be a street car only, I really feel it's worth the (relatively small if managed well) risk to turn the power up to around 350KW on e85.  I don't think anyone getting into the skyline game now is doing it out of logic. Surely it is a purely emotional decision so I'm not sure how important it is to think about the engine build logically. The heart wants what it wants.  @joshuaho96 little note for Josh, I run my 525 pump flat out all the time and through the factory lines without any issues. (excluding the melting connectors, that's sorted now. we'll pretend it never happened lol)
    • joshuaho96
      R32 GTR - Where to begin

      By joshuaho96 · Posted

      But the Nexus S3 is very expensive and won't be as purpose-built for the application as a separate electronic boost controller :^) More seriously my pet issue here would be that the Walbro 525 running at 100% duty cycle is going to require more FPR than the stock setup can handle. I'm also pretty sure from what I've seen elsewhere you might want to slow down the pump regardless unless you're going to come up with some way of upsizing the fuel lines coming from the fuel tank. Factory 8mm fuel line doesn't actually flow very much if you want to keep pressure drop down between the fuel pump outlet and FPR. If you really want to "keep it simple" I would run only as much pump as you need and source a fuel pump controller to slow down the pump in the vain hope of being able to run stock-style FPRs which are pretty dinky. Or just use the HICAS lines and it should be mostly fine. OP should also really think hard about what profile they'd want out of the turbo. My pet choice here would be the G1 profile rather than anything higher power but YMMV. I already think ~stock turbo lag is pretty bad so I don't want to make it worse. In "gentle canyon cruising" I found that I spent a lot of time around 4-4.5k RPM. I also recommend DIYing labor if you're detail-oriented enough. Costs are high for labor + if you do it yourself you can be your own quality control.
    • Kinkstaah
      R32 GTR - Where to begin

      By Kinkstaah · Posted

      GTSBoy is again on the money. My actual advice? Sell the car. (really). For what it's worth as is, you can sidegrade into something much better. If you care about function then this is the actual move. If you want a Skyline to perform, set aside about $100K to do it. This is NOT a typo. You will see right away these are two very different mindsets. Realistically we're talking full restomod for any Skyline still kicking around. Have an honest think about which one you are.. and what you want to do, and how much you want to invest in this (with no return).
×
×
  • Create New...