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Test Pipe Install, Now Trouble Starting R32 Gtr

eric.marsh.bnr32
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eric.marsh.bnr32 Apprentice

eric.marsh.bnr32

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Hello everyone!

Bit of a stupid question, did some research and couldn't find the answer.

For starters, car specs:

92 R32 GTR

Power FC

Tomei Expreme Ti exhaust with test pipe and unknown brand front pipe.

HKS pod filters with Z32 AFM

HKS FMIC and hard pipes.

Situation:

Recently i installed a cat delete pipe (test pipe) on the car and has been running great since then, accept for...

The first start of the day (cold start?) she doesn't want to start. Ill hear the starter doing work however no go. Give it another try and once the engine catches i have to hit the throttle. car will idle all f$#@ed up for about 30 seconds then all is well? Every Start up after that is normal, just the first start of the day. Has this happened to anyone else? I don't believe in coincidence, but maybe this is.

P.S. the cat temp sensor that was originally plugged into the stock cat is disconnected now. and I'm in japan... its 80 F/ 26 C in the mornings here, however the GTR had no trouble starting in 20 F / -6 C weather this past winter. :blink:

Thanks everyone!

Edited by eric.marsh.bnr32
Sinista32 Grand Master

Sinista32

Posted
Posted (edited)

I have a 92 GTR with test pipe. For me it is interchangeable without real issue.

Although, I let it prime the fuel for about 5 seconds. Attempt start, let it prime again and then she starts. - sounds similar to you.

Also no o2 in the cat delete pipe.

Leave it for a minute or so and then move off, staying off boost or hard accell till warmed up.

I live in Canberra which isn't as cold but is close.

You could try this also. Disconnect battery and leave for a while. ECU reset basically.

Cold start - Reconnect battery and start car, do not use accelerator, just let it Idle for 10 mins.

(Re-learns and adjusts idle etc.)

Lastly - take it to your tuner and get them to keep it overnight and fix the cold start.

Oh and it's not a silly question. I am sure there are many of us with this :thumbsup:

Edited by Sinista32
Sinista32 Grand Master

Sinista32

Posted
Posted

On a side note.

I recently bought a RH9 Hyper Alternator (130a instead of 80a) and am buying a Hiper starter motor to replace the aged OEM units (22yo).

Will get them fitted after Tax time. Should improve things slightly.

Cheers

eric.marsh.bnr32 Apprentice

eric.marsh.bnr32

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Posted

Thanks for the input Sinista!

Could be just a coincidence. After all she is getting old lol. It's my daily driver for now how in 6 months or so I'm picking up a cheap bike and saving for a build!! Hopefully that alternator and starter will help you out!

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