rmackinnon
Wrench Pro
Hi All
Had my 4.2 for a couple of years now. Just about to get all the essentials redone in a service (70k), and feel its time to spoil the old gal.
I am planning to do a remap, but before i do that, i want her to sound more throaty and rumbly without taking away the joy of long distance driving which i adore the most in this car.
I have Scottish in my blood so therefore reluctant to spend £1200 on an exhaust system, so like all tight arses, i am thinking about a DIY approach with a trusted garage.
I understand there are considerations to take into account such as high flow cats, bore size, length of exhaust, manifold etc, but this can all cost for what is bugger all gain... but my questions are pretty focused to start with and hope someone can help me figure out the best solution.
Because its V8, in essence the car has 2 systems running in parallel. They seem to join briefly at what i think is a resonator in the centre before parting to the rear corners.
Firstly - do i need this resonator and what is its purpose beyond softening? are there different sizes and benefits to keeping/removing?
Secondly - If i just do a cat-back system with stainless steel, remove the resonator and have a single back box each side? or would it be better to keep a centre resonator and remove the back box (or use a cherry bomb) all together?
Thirdly - any benefit to getting the professional Thermo wrap around the exhaust? This I heard keeps the gasses hotter through the system increasing flow (and keeping engine bay cooler in crappy traffic)
I am trying to achieve a descrete design so it doesn't look pimped (not even wanting to show rear pipes), just like to add some fruitiness and if possible not lose any bhp in the process
Thoughts anyone?
Had my 4.2 for a couple of years now. Just about to get all the essentials redone in a service (70k), and feel its time to spoil the old gal.
I am planning to do a remap, but before i do that, i want her to sound more throaty and rumbly without taking away the joy of long distance driving which i adore the most in this car.
I have Scottish in my blood so therefore reluctant to spend £1200 on an exhaust system, so like all tight arses, i am thinking about a DIY approach with a trusted garage.
I understand there are considerations to take into account such as high flow cats, bore size, length of exhaust, manifold etc, but this can all cost for what is bugger all gain... but my questions are pretty focused to start with and hope someone can help me figure out the best solution.
Because its V8, in essence the car has 2 systems running in parallel. They seem to join briefly at what i think is a resonator in the centre before parting to the rear corners.
Firstly - do i need this resonator and what is its purpose beyond softening? are there different sizes and benefits to keeping/removing?
Secondly - If i just do a cat-back system with stainless steel, remove the resonator and have a single back box each side? or would it be better to keep a centre resonator and remove the back box (or use a cherry bomb) all together?
Thirdly - any benefit to getting the professional Thermo wrap around the exhaust? This I heard keeps the gasses hotter through the system increasing flow (and keeping engine bay cooler in crappy traffic)
I am trying to achieve a descrete design so it doesn't look pimped (not even wanting to show rear pipes), just like to add some fruitiness and if possible not lose any bhp in the process
Thoughts anyone?