GT3 6.2 on Rolling Road,

[rallyeman]

sportsandclassic said:

rallyeman said:

sportsandclassic said:

Not sure, get the air filter taken off and put back to stock and get someone to check the resonance flap valve is working correctly.

The slightest modification to cats / intake or exhaust can have effects on the power and torque curve.

Does this sound right then? That the resonance flaps, have been permantly opened for better exhaust sound, all the time?

Has it got some sports exhaust with bypass flaps built in ?

Yes, I remember the previous owner saying they were sports boxes. 105db at Bedford.

Edited by rallyeman on Friday 3rd January 20:49

[sportsandclassic]

Ok, so the intake is different and the exhaust and you are making less than standard power....

Put some proper stuff on the car or put it back to standard.

Are you ever going to do track days...? If not get a car graphic system and fit standard air filter.

[rallyeman]

Thanks for all your help.
So I should dump the filter?

[rallyeman]

Was going to have these 100cel Cup cats fitted, when we blank off some of the race plugs.

Yes to trackdays, in Europe.

[Slippydiff]

rallyeman said:

Thanks for all your help.
So I should dump the filter?

Yes, and I'd think about fitting a new MAF to be on the safe side while you're at it.

[rallyeman]

[sportsandclassic]

Throw that in the bin and try another power run out of interest.

[s_mcneil]

sportsandclassic said:

Throw that in the bin and try another power run out of interest.

^^^ Ditto, bin that.

Here's my print out from RR day, running M&M rally style 200CEL X-CAT with stock muffler combo - stock air filter:



No before for baseline.

I've just been to DMS in Southampton for remap and now at 417, Rob is hopefully sending print out tomorrow but having MAF issues at the moment causing stalling.

[rallyeman]

s_mcneil said:

sportsandclassic said:

Throw that in the bin and try another power run out of interest.

^^^ Ditto, bin that.

Here's my print out from RR day, running M&M rally style 200CEL X-CAT with stock muffler combo - stock air filter:



No before for baseline.

I've just been to DMS in Southampton for remap and now at 417, Rob is hopefully sending print out tomorrow but having MAF issues at the moment causing stalling.

Wow, that's impressive graph. What's this M&M rally style 200 cel x cat?

[s_mcneil]

rallyeman said:

Wow, that's impressive graph. What's this M&M rally style 200 cel x cat?

Hi Neil, read this http://911uk.com/viewtopic.php?t=74295&postday...

A long and painful process...

And my mistake, the graph above is for system with 'afterhours' muffler combo, see page 2 of link.

[rallyeman]

s_mcneil said:

rallyeman said:

Wow, that's impressive graph. What's this M&M rally style 200 cel x cat?

Hi Neil, read this http://911uk.com/viewtopic.php?t=74295&postday...

A long and painful process...

And my mistake, the graph above is for system with 'afterhours' muffler combo, see page 2 of link.

Hi Stuart, just realised who you are lol

[mrdemon]

417 Bhp is even a bigger pub bragging rights figure.


But forget about Bhp, surely people can see below 6.1k the engine not a nice place to be.
And on the road keeping it above 6.1k is ni on impossible.
Drop it below and your torque dropping off like a stone about 5k and no more Bhp is on tap.
But hay oh cannot say a bad thing on that car/engine. Still the perfect road car in fanboy land.

Edited by mrdemon on Saturday 4th January 00:06

[rallyeman]

Really not bothered about figures, I'm more concerned about the odd, curve.

[fioran0]

Since its not been mentioned (amazingly), the dyno folks have the dyno setup for a forced induction engine during your runs. I presume you arent smuggling a supercharger in there?

Also take a look at the difference between your intake temp and ambient temp. Two comments to make there. If that is your actual intake air temp, get that intake set up thrown into the bin. Having a big difference here is also a nice way to get a higher dyno number (assuming its not an accurate reading of the intake temp). Stick the probe somewhere where it will measure hotter air than the engine is physically seeing and the system "corrects" and gives you a handy power bump.


as for the rest of the thread, are y'all for real?

I really dont want to single anyone out, this whole thread is wandering through fantasy land. However I feel I need to post some sort of comment to lend some credibility to that statement. The link posted above shows a figure of 326.9HP at the rear wheels for the run that provided the 391.8HP calculated engine figure graph plot. Thats almost a 20% transmission loss factor being used (19.855% if we want to be detailed) to get that 392HP figure. That engine wont be making even 360hp at the crank given that wheel figure.

Edited by fioran0 on Saturday 4th January 03:45

[fioran0]

mrdemon said:

417 Bhp is even a bigger pub bragging rights figure.


But forget about Bhp, surely people can see below 6.1k the engine not a nice place to be.
And on the road keeping it above 6.1k is ni on impossible.
Drop it below and your torque dropping off like a stone about 5k and no more Bhp is on tap.
But hay oh cannot say a bad thing on that car/engine. Still the perfect road car in fanboy land.

Edited by mrdemon on Saturday 4th January 00:06

http://en.wikipedia.org/wiki/Dunning–Kruger_effect
The Dunning–Kruger effect is a cognitive bias in which unskilled individuals suffer from illusory superiority, mistakenly rating their ability much higher than is accurate. This bias is attributed to a metacognitive inability of the unskilled to recognize their ineptitude.

Theres a whole other section on here where you can regale the assembled masses with your insights. Some might even believe them.

Edited by fioran0 on Saturday 4th January 02:12

[s_mcneil]

Just to put this in context, we know dyno hp figures are not gospel, the purpose of posting was to show curve and delta, not peak. I don't care about the overall, it's about the drivability and tying in the mods. If I, or Neil most probably, wanted bhp bragging rights we'd have probably bought turbos.

[mrdemon]

fioran0 said:

http://en.wikipedia.org/wiki/Dunning–Kruger_...
The Dunning–Kruger effect is a cognitive bias in which unskilled individuals suffer from illusory superiority, mistakenly rating their ability much higher than is accurate. This bias is attributed to a metacognitive inability of the unskilled to recognize their ineptitude.

Theres a whole other section on here where you can regale the assembled masses with your insights. Some might even believe them.

I take it that's a self diagnose ? keep on topic and stop the personal attacks, or don't respond to my posts if you cannot keep it civil.

I see you deleted your 1st post which was a slagging post to the others here :-) (it's ok I won't quote it so you can save face)

if you like to diagnose here is one just for you which fits the bill well, and fits in with your slagging and deleting of posts as seen over and over even in this thread.

Bipolar disorder
"also known as bipolar affective disorder, manic-depressive disorder, or manic depression, is a mental illness classified by psychiatry as a mood disorder. Individuals with bipolar disorder experience episodes of an elevated or agitated mood known as mania alternating with episodes of depression."

Edited by mrdemon on Saturday 4th January 09:54

[V8KSN]

Mr Demon STOP!

Stop demonising anyone who likes the GT3, it is what it is and some people like it, others don't, just accept that.

You sound like those people who say the Cayman is not a 'proper' Porsche and we all know how stupid that sounds so just give it a rest please.
Just because someone posts a thread on a GT3, it does not automatically give you the right to slag GT3s off with your opinion.

I have half a mind to go out, buy a Cayman R, run it for two months and then take any and every opportunity to say what I didn't like about it on every Cayman based thread on PH.

Can you see how annoying that would be?

In fact, I might just go out for a 20 minute test drive in one just so that I can.

[V8KSN]

Here is my printout from a couple of months back. I have no idea what it means or if its good or bad, it was just a bit of fun to go to a shootout

The car has a Hayward and Scott bypass, sounded amazing in the enclosed room!

[mrdemon]

V8KSN said:

Mr Demon STOP!

Stop demonising anyone who likes the GT3, it is what it is and some people like it, others don't, just accept that.

You sound like those people who say the Cayman is not a 'proper' Porsche and we all know how stupid that sounds so just give it a rest please.
Just because someone posts a thread on a GT3, it does not automatically give you the right to slag GT3s off with your opinion.

I have half a mind to go out, buy a Cayman R, run it for two months and then take any and every opportunity to say what I didn't like about it on every Cayman based thread on PH.

Can you see how annoying that would be?

In fact, I might just go out for a 20 minute test drive in one just so that I can.

AS you know I'll help any one. he was slagging off people here and dyno's and then must have thought better of it and deleted his 1st post.

I have said many times the GT3 can be the perfect car , I am fair but do post on FACTs and ownership.
I don't get upset if people slate the R, the press did it, Chris harris did it, many here say it's no GT3, I am happy with that.
It not a race car, it has no pedigree, it's 100bhp down on a GT3, it has no sus ajustments etc etc, it's not a 911 (what ever that means)
SO NO it would not be annoying those are the facts of the car, I know that lol slag away.
I have owned 50+ cars and know good and bad points with all of them.

I can post dyno plots coming out your ears regarding what happens to the map if you drop below 6k revs with a GT3,
your torque drops and your BHP is going no where. take that baby off the boil and you are dumped in no mans land.
these is NOT my opinion they are facts of the map !!!
I said why I sold mine because of not being able to keep it over 6k 100% of the time even when trying hard.

but people swear black is white here and disagree, so I'll post a few GT3 dyno's :-)

I'll point out the bad bits on my cars and do while owning them, I just don't like the high status the GT3 has and owners will fight till the death to protect the image.