R34 Gtr Cat

[sinistaGTR]

Looking to replace my cat on my 34 GTR, do I require one with a provision for a sensor in it or doesnt it matter

[R31Nismoid]

don't matter.

not sure if there is a MFD reading though for ex temp... it'll read zero if thereis.

[XKLABA]

you don't need it, but it is just a case of welding a nut and drilling a hole in whatever cat you get, a easy job for whoever fits the cat, your ex temp sensor won't read without it,

[maclarenf1]

Looking to replace my cat on my 34 GTR, do I require one with a provision for a sensor in it or doesnt it matter

same situation, so subscribed

my current tiny compliance cat has no sensor in it, but i have seen Cat for GTR on Just Jap has provision for a sensor

Car runs HKS F-COn with no Air flow meters, not sure if this has anything to do though

[R31Nismoid]

its just a sensor that has no effect on ECU.

basically just a dash light/warning.

and once you mod cars, there is more heat etc effectively making it pointless anyway.

if you want exhaust temp, a proper sensor in the dump pipes is what's needed.

[SiR_RB]

Doesn't the r34 gtr have an exhaust sensor in one of the dump pipes? Or is that for something else

[maclarenf1]

its just a sensor that has no effect on ECU.

basically just a dash light/warning.

and once you mod cars, there is more heat etc effectively making it pointless anyway.

if you want exhaust temp, a proper sensor in the dump pipes is what's needed.

Thanks

I do have ex.temp showing in the display, but not sure where it getting picked up from

[SiR_RB]

must be from the dump pipe

i had to block that hole with a bolt when i put them in my car along with -7's

[Beer Baron]

yes, 34 GTR have ext temp sensor in the dump pipe and also have the cat overtemp warning sensor in the cat. the cat sensor is not that important, but if you are buying a new cat may as well get one that has provision for the sensor as it's nice to know if your cat is overheated/blocked/damaged.

[XKLABA]

its just a sensor that has no effect on ECU.

basically just a dash light/warning.

and once you mod cars, there is more heat etc effectively making it pointless anyway.

if you want exhaust temp, a proper sensor in the dump pipes is what's needed.

ok so the temp sensor for the mfd is near the O2 sensor? good to know.

yeah the sensor in the cat is just for the warning light on the dash, so if that light comes on genarally your cat is gone or going, was unsure if it did the ex temp for mfd aswell

[R31Nismoid]

ok so the temp sensor for the mfd is near the O2 sensor? good to know.

It would appear so - i didnt know either. so handy info worked out

[BrynDETT]

i was under the impression only v-spec r34's had the exhaust temp sensor.. its in the rear dump pipe down near the flange for the front pipes.

[R31Nismoid]

That's what is being discussed here... R34's!

[BrynDETT]

if you re-read my post u will see it says " v-spec r34's"... as only cars with the mfd #2 have the exhaust temp and another inlet air temp sensor in the cooler plumbing....

ie. normal non-vspec r34's will not have these

Edited March 21, 2011 by BrynDETT