Sorry for asking this I'm sure similar questions have been asked dozens of times, but there has been some very helpful people on this forum for me so far.
The current spec of my 03 156 is as follows.
1.6 ts with air box resonator deleted and v6 intake pipe fitted, bmc filter in the standard air filter housing, 2.0 ts throttle body, 2.0 ts cam shafts, ragazzon exhaust from the cat back with small ragazzon middle box and ragazzon back box alfisti edition.
The car drives, pulls and sounds great for a 1.6ts but the next step I want to take is removing the precats.
This is where I have a few questions.
I read that one option is to modify a cf2 down pipe to suit the lambdas etc.
But I was thinking about either cutting out the precats and welding in 2 pieces of pipe in their place
Cutting open the tops of the precats, remove each cat and then welding them back closed leaving 2 empty chambers and an original look.
Would 2 empty cat chambers have less performance gain than welding in 2 pipes? Or would both options give identical results?
With the precats removed, will the car get louder than it currently is?
How will the precat delete effect emissions results when it comes to getting the car tested?
That is all my questions for the moment
The sooner I get this done then the sooner I can maybe get the car mapped.