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That non-mandrel bend has the cross sectional area equivalent to a 1-3/4 inch pipe. That is what your fabulous V-12's exhaust, having pushed...
Fabio, your "headers bended pipes" are gorgeous, surely you are not happy with the pipe bend I just showed you, which as far as I know exists on...
Taz, my car has had the rev limiter disabled by a previous owner. I have had it pull hard to 8000 rpm just to see. To be fair to the stock 575...
Fabio, you cannot hand time this with any accuracy. If it is accurate, your car is as fast as an Enzo and is 2.2 sec quicker than stock!! You need...
My advise from Bosch is that the ECUs on 575s go open loop in full throttle/load conditions. That is to say there is no feedback and the fuel map...
Thanks Taz, if he thinks his car is fast now, just wait until he enlarges the post cats exhaust. That explains a lot to me as to why his ECUs...
Fabio, what are you using for the rear cans? Are you still using stock diameters for the exhaust pipes? I am interested because I need to find a...
Judging by the OEM exhaust manifold which can be seen in one of the images it is just a boy racer.
Why so small when the opportunity is there to increase the pipe size even using the same cats? FBB is right, they should be non-shiny if you have...
Cheers Fabio, however I am forced to change manifolds so I have gone for the headers. They should greatly compliment my 3 inch exhaust system...
Taz, how many 575 owners have had their manifolds acoustically checked? I will bet that you haven't either. Cracks will not affect much AFR wise...
So we have a cracking manifold issue with F430s with excess heat not the issue, yet when I show my 575's cracked manifolds, I have burned them up...
Great story, great car.
Fabio, for some reason I didn't see the drawing of the 250 exhaust 1st time. I take it all back about the 6-1 systems never being used by Ferrari.
Perhaps mine were cracked from the beginning of my ownership. A wideband AFR confirmed that my car actually was richening up (11's AFRs,full...
Taz, I proved that I had not 'burned' my manifolds by cutting open a cat which was pristine inside. There were no visible heat discoloured areas...
Cheers James
I have 3inch cat back on my 575. No need to go larger.
While you are at it increase the diameter of what you replace. Even if you have to reduce back down at the rear muffler, you will get even better...
