Forums > General > This Porsche ECU over-rev thing

THIS PORSCHE ECU OVER-REV THING
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Lurking around the Porsche fora the amount of OMG teh rev ranges posts are incredible, so much so that cars with over-revs are like lepers and there's even talk of Porsche not covering cars beyond certain ranges warranties.

This all puts me of one to be honest particularly if doing any kind of track work and the euro jaunts.

Anyone else noticed this?

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A yellow loltus

It's the internet. Real life is -----> that way.

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Tim

M135i 8 Speed Auto. Alpine White. Faster than Yu.

:lol:

Simple - just don't over-rev yours, or other peoples Porsche's - Mark Hales will confirm this is a bad thing to do!

That's tradition and heritage - as was recently reminded it can be traced back to the 917 :?
(although I suspect it had nothing to do with any ECU for this model).

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Pilouil
Citroen C3 1.4 HDI 69.0424 bhp

Tim said...

It's the internet. Real life is -----> that way.

I do feel like that but if a car has a dubios history teh fanboys make it worth about £3.74 :lol:

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A yellow loltus

Are they classing over revving as hitting the limiter or going through the limiter on a down change?

going through the limiter on a down change is one code
Hitting the limiter is another code that is registered so both id say.

I'd hate to think if VAG registered this how many times my GTI bounced off the limiter! Even worse my Saxo VTR when I was 21!

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Strong Broo Racing

I thought the limiter was there for a reason - and it protected the engine from over-revving... surely hitting the limiter doesn't harm the engine?

It's far from ideal in any circumstance.

Buy a Porsche approved used one then.

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Making pancake mix for your mums pancake tits.

scotta said...

going through the limiter on a down change is one code
Hitting the limiter is another code that is registered so both id say.

Hitting the limiter can't be a concern. :?

Taking it past this point via clumsy downchange is the issue as I understand it - which is of course a useful piece of additional information, but it is a topic which seems to get everyone rather excited : somewhat understandably if Porsche themselves are getting 5hitty over warranty claims.

Specialists look for these codes for a reason as I understand it, and its not because nervous nerds won't buy such cars. Seen some postings on PH from Hartech, 911V and similar that would make me check such codes.

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Caterham 7 - Seat, steering wheel, pedals, er... Lights?

I bet there's a way to erase the over-rev history.

mik said...

scotta said...

going through the limiter on a down change is one code
Hitting the limiter is another code that is registered so both id say.

Hitting the limiter can't be a concern. :?

Taking it past this point via clumsy downchange is the issue as I understand it - which is of course a useful piece of additional information, but it is a topic which seems to get everyone rather excited : somewhat understandably if Porsche themselves are getting 5hitty over warranty claims.

Not sure about that. Isn't it on the Abarth 500 where if you have hit the limiter for more than a couple of seconds you can get the essesse kit for it?

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Making pancake mix for your mums pancake tits.

Mito Man said...

mik said...

scotta said...

going through the limiter on a down change is one code
Hitting the limiter is another code that is registered so both id say.

Hitting the limiter can't be a concern. :?

Taking it past this point via clumsy downchange is the issue as I understand it - which is of course a useful piece of additional information, but it is a topic which seems to get everyone rather excited : somewhat understandably if Porsche themselves are getting 5hitty over warranty claims.

Not sure about that. Isn't it on the Abarth 500 where if you have hit the limiter for more than a couple of seconds you can get the essesse kit for it?

No more than 60 seconds of Rev Limiter, and under 18,000 miles.

if it's that important that you dont hit the limiter could you fit an aftermarket one 300rpm bellow the factory one so you could never hit it?

i suppose on a modern engine that would log a missfore fault code though.

then again, if it's that vital that it's not hit then why not fit a better / smoother limiter system as standard which starts a little earlier unless they fancy using it as an excuse not to honour warranty claims...

On that not, why are more factory fit rev limiters so harsh? My emeral ecu has a soft and hard-cut rev limiter, and you can set the gap between them to whatever you like. soft cut blends out the power nice and gently, keep your foot pressed and it will hit the hard cut with assorted pops and bangs. I've never seen a similar system on a standard car.

Also a bit annoying that to achieve the performance figures the manufacturer will happily use in their advertising they'll be flat shifting and relying on the rev limiter between gear changes :roll:

buzzing the engine on a downchange is a different matter as unless there's a physical lockout on the gear lever (in a manual) there's nothing a manufacturer would be able to do to prevent it. Probably yet another reason why they love autos, dual clutches and automated manuals where the software can prevent a downchange likely to harm the engine.

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cheers,

Harry

Too many old sheds.

WTAF? If its not safe to tin at the limiter, lower the limit.

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Knackered old hairdresser's sh1tter

Si_ said...

WTAF? If its not safe to tin at the limiter, lower the limit.

Or just drive more better in the first place.

hth

Surely the limiter is there to keep you only revving to a safe limit. If hitting it is so bad, why have it set so high?

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Cheers

Rich

Barry said...

Si_ said...

WTAF? If its not safe to tin at the limiter, lower the limit.

Or just drive more better in the first place.

hth


driving more better is key here.

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