How do I lift the speed cut?

[Simmo]

How do I lift the speed cut in my 32 gtr, for track days etc?

Cheers

Simmo

[Guest INASNT]

get a pfc

[Revhead]

Is that your car in your pic? The 'lines won at Bathurst and still had the 180km/h cutout, up the Nissans! (kidding)

Seriously though, a PFC or dedicated cutout defender would be your best bet. Not sure if the 'wire 53' trick will work on the 32s, but I'd be suggesting that they do (might not be wire 53 though).

[46n2]

Unless you're ripping out the HICAS, cutting the wire isn't a good idea...I've heard that the HICAS does stoopid things when you cut the wire due to bad signal.

You could get the ECU reprogrammed (raise the boost & speed limiters, change fuel maps etc); or get an after-market device to do so (as mentioned by others). The Apexi RSM (i think they're about $300) gets rid of the speed cut. Run a search on the forum, as there's a number of devices made for this purpose.

Happy hunting

46n2

[rb26dett]

cheap option would be to get speed cut defender. HKS makes one. or the apexi rsm would do the job as well.

but if u're planning on upgrading ecu might as well save up for it, no point getting a speed cut defender and an ecu.

[aza]

u can cut the wire but spen the $12 and get a good togel swich so when u r not needing it u can swich it on

iv fount this web page very useful www.rb20det.com. it shows a lot ov good tricks

[Duncan]

If it really is for track days you prolly don't need to. Eastern Creek is the only track in NSW where you'll hit 180+ (unless you've got a few extra horsepower)

[benm]

Duncan out of interest what speed would you hit on the main straight at EC ?

[Duncan]

Me? only 210.

I'm sure some of those cheaters with mods go faster Merli would see a pretty solid number!

AFAIK I still have the speed limiter in my car, so it must be pretty liberal in the 33s. I understand it is much stricter in the r32 (ie exactly 180)

[benm]

Mine is a confirmed 190km/h

[Duncan]

Well, as an aside, 190 is also the rev cut in 4th, did you try that other gear :bwahaha:

[benm]

Yup tried the other gear, backed off to 170km/h and then planted it again only to still be cut at 190km/h.

[Simmo]

thanks heaps guys, I do plan to go PFC at some stage, I'll try and wait for then i think!

Thanks

Simmo

[nizmokid]

i HAVE A SPEED CUT 4 SALE AT THE MOMENT! $110 and it is yours! PM if you are interestead?

:)

[Simmo]

What is this 'speed cut' you have?

Simmo

[darkhalf]

ROM editor can do it if you know how... just checked the file

# NISSAN BNR32 RB26DETT MAP ADDRESS (E)

SPEED1_LIMIT,&H7FA5,2,1,1,2,Speed Limit 1

if there is a 28 pin EPROM chip in there (ECU) then i can do it for $80 (cos i have to unsolder and reprogram it). also can increase the rev limiter

matt