vz ss exhaust options
whats the best possible system for power on a vz ss 5.7l?
no forced induction as of yet, thinking maffless tune, otr, pacies 4into1 non coated, 2.5inch stainless xforce dual system hiflow cats (metalic0 so they dont bust? or better to just gut ceramics? 3inch overkill? n some1 said that single 3" pipe is better than 2.5" dual.. bitta input tuners plz much appreciated
also are just 3" cats hiflow on a 2.5 dual system better than 2.5" cats on same system bigger better? or no back pressure?
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If you're looking at 'best possible power' as you say, you don't want X-Force. Look at a better quality cat-back. Also you want your cats to flow so 3-4" would be better than 2.5".
or u can get a custom 1 made up i have a custom exhaust on my R31 Sedan from the headers to the tip and with out that bling on the end of them its all stealth and its 2 quarter standard cat is in place aswell
Banned
Pacemaker, Whole 2.5" exhaust system for $2300.
Either that or Difillipo for about the same. I personally profer the sound from the Pacemaker system.
Xforce is cheap nasty shit...
Alloytec Racing
Canon would work well..
Life starts at 200km/h
too many 'ricers' have cannons on with their 'Vtec hondas'
Banned
Don't use a Cannon. I'll come to your house, cut it off and jam it up your arse.
i bought a xforce twin 2.5 full stainless catback for a 100 off a mate and it sounds good but if you just want max power go the full 1 7/8 extractor with full twin 3 cats and system
Banned
Nothing wrong with the X-force when its that cheap LOL!
Sick response people leann towards difillipo..hope theyr still loud tho? yeh xforce is a bit nasty. canon bahahah. so 3inch system.. if not forced inducted wont that b overkill i.e no back pressure at all? pacies up front 4into 1 whats tha best size? 1 7/8 or is only gunna work wit 3" systm? is 1 3'4 to little? #### wish i could try b4 buy lol. n biggest cats possible or def 3"ers ne thing wrong with metallic cats? or are ceramics tha go? last 1s gutted cos they shat themselves tho. maybe tha full pacey system would be good. handfs up 3inch or 2.5??? cheers guys!!!!
if you want max power on a dyno the 1 7/8 with twin 3 will net you the biggest hp but low rev torque will suffer unless going big cam
how would 4 into 1 (1 7/8) go with 3" cats and 2.5 difillipo system? no cams in direct future maybe when $grows.? cheers
ok disregard previous comments please somebody is it true that a single 3" cat back system is better than a twin 2.5" cat back system???????
are pacemaker cats better or just as good as difillipo?
twin 2.5 cat back or twin 3 or single 3" arrrrgh wish i could try before buying damn help out tunerz?????
Banned
No thats not true.
For a totally standard 5.7, twin 3" is too big.
Single 3" is too small.
Twin 2.5" will flow enough to see over 450hp.
Bigger and you'll loose exhaust gas temperature and therfore velocity, smaller and you'll restrict the flow and loose velocity.
i will have pacies n hiflow cats tho. what if cam isnt that far off?
n pacey cats or difillipo?
2.5twin custom system mandrel bent guessns tha go then
sorry so much to know n learn re: zausts bit of a science really preciate feedback
Banned
Even with a cam you wont need a twin 3". Everyone will say you do.
But I've seen cars push 500hp through 2.5" pipes.
Unless you're going a REALLY big cam in it, you don't need twin 3".
I'm running Pacies high flow cats and twin 2.5" exhaust on my car at the moment.
I'm planning to run a fairly aggressive cam with it. I don't intend to change it.
Ausome starting to get a good idea, thanks mate. So far im going pacemaker 1 7/8 4-1's (ceramic coated (cos some1 said pacies dont do stainless headers?) and high flow metallic cats (dont know if im going difillipo or pacey cats here but theyll be 3") and for the system difillipo twin 2.5 stainless with 3" tips for show. what do you reckon?
Banned
3" cats is a waste of time if the rest of the exhaust is 2.5".
Price how much it will cost you and check the pacemaker systems on ebay.
True ok somebody else did say this also. Now ive just recently spoken to darren difillipo and discussed a system. Main questions to date twin 3" or twin 2.5" (i want to go tha 3" but am told is overkill unless cam/head is done.) or should i just go it would it sound better or worse? been assured there wouldnt be a drone, just the 2.5" would sound more aggressive when given to it and the 3" would be a louder idle. i dunno, i wanna think going tha 3" wouldnt be a mistake but its a bit of a catch 22..? at least then its charger ready. Also leaning more towards 1 3/4, 4into1 headers due to them being better low end with little work done to motor while tha 1 7/8 would be better top end after cam or charger. gettn closer to purchasing something but want to be 100% happy i guess.
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