Bump - anyone got some knowledge to share?
Alrite dom ive had the Hi flow cats fitted mate and they do make a difference the car feels alot more free! they make a loverly sound! My cats set me bk I think £700 or there abouts! So quite a bit of doe! When they took my original cats off they was on there way out any way and they had only done 18000 miles, so if you need new cats go for them!DomR32 said:I spoke to APS the other day about getting a remap done, and asked whether I'd need to get it remapped again if I ever got around to doing the cats and manifolds to go with my milltek cat back...
His reaction was that APS rarely advise fitting aftermarket manifolds as you lose low down torque. Do people know if this is true, and could someone explain the benefits and power/torque gains involved in adding hi flow cats and/or manifolds after the cat back? I understand Hi Flow cats are a higher impact mod than manifolds, but at a price.
Cheers for the responses guys. The remap will be next, and i've always thought I'd go as far as I could power-wise without breaking the bank (forced induction) or doing irreversible things to the engine (cams).robocopywriter said:Interesting question. Don't know anyone who has done this without also putting in a performance cam the way I have. I will say that with the cams there was zero torque loss with the addition of headers to my Milltek cats and catback. With the 2 stage manifold and VVT our engines are very torquey. I doubt whether headers will cause any loss. As to whether it's worth it, if you're going that far, do yourself a favour, put some cams in and get revo stge III software. You will be amazed.