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The mkiv Supra Owners Club

Rpm drop when revved? NA-T


ballsdeep

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I'm coming to the end of my na-t build but have a small issue with the rpm slightly dropping before and after I rev it, is this something that will be resolved when I have it mapped, or more likely to be a vacuum leak somewhere?

 

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Edited by ballsdeep (see edit history)
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im dropping it off with them on the 5th after work and leaving it with them, its booked in on the 8th july so fingers crossed it will be complete on the 9th-10th? if I have any problems like you are im screwed! Ill have no choice but to put it on hold because the misses is about to drop our first child any minute now!! :blink:

 

will try and increase the rpm to 950-1000 tomorrow and see how I get on.

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7psi landed me 373 with a misfire on 95ron fuel.

 

as long as it runs. your hit 300bhp.

 

Just got a semi.. :D If I hit any where near that I'm seriously going to need a new clutch and tyres!!!!

 

In regards to adjusting the idle can it be done through the EMU software

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not entirely true noz ;)

 

your's wouldnt be considered as running nick!

 

- - - Updated - - -

 

Just got a semi.. :D If I hit any where near that I'm seriously going to need a new clutch and tyres!!!!

 

In regards to adjusting the idle can it be done through the EMU software

 

Idle rpm can be adjusted yes. But there shouldnt be a need to adjust it. That solution may hide the cause.

 

If you are on stock clutch you probably won't even make it home from the mappers...

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Doesn't really look like an issue to me, that's bugger all, you want to try driving my old Porsche, blip the throttle it's about 2RPM away from stalling when the revs drop:D

 

It'll be smoothed out on mapping in my opinion, worst case scenario is there is some sticking in the ICV which is just catching it a little later when the revs drops and causing an iffy transition when going for the throttle.

 

I wouldn't be worried personally, what's the idle like at cold vs warm?

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