theres alot of crap and mud slinging reguarding the credibilty of mock's gear,
there own dyno seems to read very high,
i have sen their extractors...... have to say i am un-impressed.
the primarys are only just bigger then the ports themselves, i know this helps with scavenging and high gas speeds, but it leaves me to wonder.. will they be any good to you once you start adding bigger and bettter things to the engine, as the small primay's will hamper flow in future applications
second point i dont like about them is the fact they are press bent pipes, not mandrell bent, which again will hamper flow down the track.
if ur only going to put the extractors and exhaust on to the car and thats it.. well the mocks will be alright.
personly i prefer the pacemaker pipes, they may not be tuned length but they have been proven to work, and work well.
1 1/2 inch primary's versus mocks 1 1/4 will mean you can use them further down the track.
i had them on my ea for a while.
i orignaly had a 2 1/4 mandrell straight thru exhaust and hi-flo cat set up with a set of motivator extractors i ran a 15.6@88mph. i then went and fitted a set of pacemakers with a 2.5 mandrell system with straight thru muffler and hi-flow cat, best time 15.33@94mph with wheelspin in 1st & 2nd gears of the line. i was confident of cracking a 15.2.
but alas a broken diff ment i could not try and run faster.
so pacemakers have my nod.
i'd suggest a set of pacemakers,a 2.5 inch manderll exhaust with 2 straight thru glass pack mufflers, a 6.0lt high flow cat ($1100 all up).
run a au falcon lower half of the airbox with a ef falcon top half (100 bux tops at wreckers) a 3 inch manderll bent pipe from air box to throttle body ($175). and a au series 3 xr8 220kw air inlet snorkel (42 bux from ford) and a k&n panel filter ($105), use premium fuel as well and you should see a 15 percent gain in hp... so go from 157kw to 180 odd kw.
next step head work and cam shaft ($2000 ) and a chip as well ($650)
240+ flywheel kw will be had (320+hp). for a total spend of 4200 bux you will have a low 14 sec high 13 sec street flyer!!!.
cheers.joe.
