lol @ SiPie !!!!!!

The wee bit on top of the dash is where Scooby lives, he even talks to you

AJ

 

looks good
ozzy,
please let me know if u get a price for the kit(s)

 

Will do. I'll chase Mike @ Scoobymania tomorrow.

Stefan

 

Back to the original question.........I thought this was just a side effect of having a full de-cat. Fuel exploding in the hot exhaust pipe causing the pops and bangs, you hear it on lift off as unburnt fuel gets dumped into exhaust. I hear the occasional pop on my cat back system......Totally normal I thought

 

SB,

At the Autosport Motorsport show I visited the Link stand and was shown a knocklink sensor in the form of a gauge and looked just like a boost gauge. I thought it was rather cool looking. As knock becomes more detectable the needle obviously moves around but the backlight on the dial goes from green to blue to red. Cool . Speak to BR Developments I think they will know about it.

 

Ever get the feeling Paul didn't read the whole thread

Cheers anyway mate

 

I'd appreciate some technical input to help answers some questions I have (thinking about de-cat up and down pipes to go with my PPP kit).

Why should a knocklink type unit be needed whejn running full de-cat. Are there side effects that I should be considering with this modification (I do about 24000 miles a year in my Scooby - although only had it since Nov 02 and done 4500 mile so far). Will high milage be a problem with full de-cats?

Thanks.
Richard.

 

Don't see the problem with decats on non-STis/P1s. But standard engines do go, if I had any turbo petrol engine standard or modified car I would fit a knocklink or similar knowing what I know now.

 

Even on a standard car? Why? Share what you know now

 

Is the concensus then that the standard knock senor and ECU control of it is not sufficient when the exhaust is upgraded to free-flowing and no cats?

But is detonation/knocking not usually present under high-load and low rev's scenarios, can driving differently help? In my mind I would have thought free-flowing would have help the ignition system and engine generally run free'er and with less restriction.

Popping and banging on throttle lift-off is not the same as detonation is it? This is unburnt fuel in the exhaust not in the conbustion chanbers although I guess any not in the exhaust could be in the chambers and lighting on compression stroke not anything else...

Don't think I understand. Help please? Opinions from people running de-cat (and PPP or similar) with or without problems please!

 

The reason is simple, if the wind blows the wrong way or Scooby is in a bad mood for some reason it just doesn't bother correcting or worrying about knock!

 

ozzy,
can u post the pics of the Scoobymania one here?
Is there a price yet?

 

PMSL

You have to be joking!!! Why does it do that???!

 

Hong Kong Phooey YHM.

Stefan

 

Kenny,

I think the ECU uses women's logic to work out knock correction; seems like it just decides what to do by the moood it's in.

The slightest of-the-cuff comment and it'll fly off the handle with no warning. And never let it here you say it's got a fat @rse especially any bug-eye owners out there.

Stefan

 

Thanks for the solid and very technical feedback....all my fears have gone away. Once I sort out the female mind I can get a full de-cat kit!

 

ozzy, yhm, but ignore it, the pic worked.
thanks.

 

Kenny,

Here's another solution to your cosmetic concerns about the knocklink....

DIY MODS

Check the rest of the page too - he's done some good stuff...

Has anyone got a price for the new dial type knock link yet ??

 

cheers kart-man...looks like an interesting site