stevie1982

iTrader: (16)

hi

just a quick question, i have a after market exhaust system which is a bit loud for me if i am honest, also has a 4''+ exit pipe not really my thing either and not to sure of the make as it was fitted when i got it.

i have had the car mapped after a few tweaks but wish i had changed the back box first.

if i was to swap it out for a PPP or H&S or something similar will i notice much difference obviously as long as it is the same diameter pipe will it restrict the gas flow and would i really need it mapped again

any advice would be great

thanks

steve

bpm1588

i'd say you would get away with changing the back box without remapping.depends on what you call loud but i found the tsl group n box a good compromise which did'nt do my car any harm when it was mapped.

dunx

iTrader: (3)

A less restrictive back box will aid the spool up of the turbo, give better fuel consumption, and sound nicer... most after-market items will flow about the same, i.e lots better than standard.

All IMHO

DunxC

P.S. TSL Group N on mine now after three years with their Firestorm (V.noisy)

stevie1982

iTrader: (16)

any chance of a sound clip of the TSL Grp N i had a firestorm on my old p1 and removed it as soon as i found a p1 upgraded backbox

so as lomg as i go down the after market route i should be ok but just stay clear of teh standard and ppp boxes?

any idea how loud the h & s systems are just seen a couple on ebay