How long to change decat to cat?
Discussion
Stupid question really and I assume no more than a couple of hours but I'm not sure whether to do it tomorrow or after the weekend (when I want to be out driving).
Am I going to get the decat pipe off and fine I need new gaskets or should it just be a simple swap bearing in mind it was all apart only 250 miles / 6 weeks ago anyway?
Ta
Am I going to get the decat pipe off and fine I need new gaskets or should it just be a simple swap bearing in mind it was all apart only 250 miles / 6 weeks ago anyway?
Ta
Changing out the standard CAT on my S2 Exige was a total slut of a job.
The cat to manifold nuts are made of jizz, and rounded at the first sight of a spanner and were rusty, so had to buy new ones from local Toyota dealer. They had none, so cue 3day wait. I would recommend getting some for standby prior to starting.
Also, one of the bolts (there are only two that hold the CAT pipe to the doughnut joint thing) is fairly inaccessible unless you have a range of sockets / angle things / extensions.
Hope that helps.
The cat to manifold nuts are made of jizz, and rounded at the first sight of a spanner and were rusty, so had to buy new ones from local Toyota dealer. They had none, so cue 3day wait. I would recommend getting some for standby prior to starting.
Also, one of the bolts (there are only two that hold the CAT pipe to the doughnut joint thing) is fairly inaccessible unless you have a range of sockets / angle things / extensions.
Hope that helps.
I've got an S1 with the 135 kit (which includes a 'decat' )
Every year I get charged two hours labour to fit/remove the cat at MOT time.
My question is?
Does anyone know if there is any significant BHP difference with or without the cat on a 135. If it's 1 BHP, I'm not bothered, but if it is 10, I'll put up with the annual decat/cat process
Every year I get charged two hours labour to fit/remove the cat at MOT time.
My question is?
Does anyone know if there is any significant BHP difference with or without the cat on a 135. If it's 1 BHP, I'm not bothered, but if it is 10, I'll put up with the annual decat/cat process
Redlake27 said:
I've got an S1 with the 135 kit (which includes a 'decat' )
Every year I get charged two hours labour to fit/remove the cat at MOT time.
My question is?
Does anyone know if there is any significant BHP difference with or without the cat on a 135. If it's 1 BHP, I'm not bothered, but if it is 10, I'll put up with the annual decat/cat process
You'll lose around 3bhp (unless you have a vvc in which case you'll gain 1 or 2). You won't notice it, though it will be quieter. I put mine back on because it was just too loud without.Every year I get charged two hours labour to fit/remove the cat at MOT time.
My question is?
Does anyone know if there is any significant BHP difference with or without the cat on a 135. If it's 1 BHP, I'm not bothered, but if it is 10, I'll put up with the annual decat/cat process
Lotus Lewis said:
I was going to do what your think get the decat pipe and change it back for the MOT, but i found out that when you decat the car it will be come illegal so you are driving around with no insurances so it was a risk i didn't want to have ,i went for a hurricane kit instead
Even a car without any MOT isn't necessarily 'uninsured'. My mods are all declared to my insurer, including the decat pipe, and it was on there when the car was accessed for a £4K claim last year.... Hollywood Wheels said:
Lotus Lewis said:
I was going to do what your think get the decat pipe and change it back for the MOT, but i found out that when you decat the car it will be come illegal so you are driving around with no insurances so it was a risk i didn't want to have ,i went for a hurricane kit instead
Even a car without any MOT isn't necessarily 'uninsured'. My mods are all declared to my insurer, including the decat pipe, and it was on there when the car was accessed for a £4K claim last year.... Lotus Lewis said:
will my insurance price go sky high with a decat pipe has anyone been quoted an insurance price before a decat and then with a decat
If your insurer tries to up your premium, then you need to be looking elsewhere for insurance. My mods (Nitrons, Hurricane, Sports 'zort, decat...) make no difference.Plenty of people will say the decat isn't worth it, but for me the popping and banging is worth it. Don't do it for BHP gains. I may even be replacing mine soon because with the hardtop on the noise is unbearable (I use earplugs all the time now). However, a run through a tunnel as I watch the walls light up with the flame from the back of the car makes the hassle worth it. Others feel differently, fair enough.....
Hollywood Wheels said:
Lotus Lewis said:
will my insurance price go sky high with a decat pipe has anyone been quoted an insurance price before a decat and then with a decat
If your insurer tries to up your premium, then you need to be looking elsewhere for insurance. My mods (Nitrons, Hurricane, Sports 'zort, decat...) make no difference.Gassing Station | Elise/Exige/Europa/340R | Top of Page | What's New | My Stuff




You're not the first person to say this Tim. Was never bothered about BHP gains, and the car is an utter pig at low speeds anyway! The noise is just getting beyond a joke now, so it may be coming off depending on mileage this winter....
