ive recently had a 2nd hand exhaust system fitted to my my00 comprising of a magnex twin dump down pipe and an hks centre pipe and rear box,thereby removing both cats. At the same time a Blitz sus induction system has also been installed. I expected great things from this mod having read these pages for a couple of weeks but to be honest im quite puzzled .It sounds great but I cant feel any increase in performance at all, if anything acceleration is a touch slower!! Where have i gone wrong guys? Dissapointed of wokingham!!

 

First things first - What petrol are you using?

 

just normal unleaded brun, should i be useing something else>

 

Super or Optimax is a must.
The chances are you will offset the extra cost by increased mpg.
On a MY00 it will take 2-3 tanks for the ECU to adjust to the new fuel, but once thats done your car will run smoother and perform better.
I'm quite suprised you have noticed no difference at all with the full decat.
When i had mine done i didn't notice the massive power gains that people spoke of, but over time (3-4 weeks) i began to notice how much harder the car revved and the invreased mid-range, especially when overtaking.
Just as a side note - the induction kit you're running may possibly have an argument with your MAF sensor. Do a search on this subject.

 

Thanx brun, will top up with optimax in the morning. must admit it did cross my mind but wasnt too sure about it as i am relatively new to the scooby tuning scene.Hopefully things will improve after acouple of weeks on optimax!

 

Keep me posted on how you go.

 

wil do mate. ta

 

I don't understand it. i put in a HKS induction kit and magnex back box and the result was amazing, i reckon i got a lot of horses out of that. That's still with both cats in

 

I have just fitted a scoobysport backbox and there was a definate improvement, I am in the process of fitting a JW Racing(Magnex) twin dump pipe downpipe and should feel an even bigger improvement......I hope.

 

check the fueling i bet its running ultra lean now it has a induction kit and free flow exhaust on it.get a lamdba link and see whats going on there is a group buy going on at the moment in the general section.