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#1 | ||
SS Grunt
Join Date: Oct 2005
Location: Melbourne-DEER PARK
Posts: 1,091
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Hey guys how are yas, just a quick question, i was down at herrod today after work and was looking at their exhausts and headers for my au2 xr8 ute, at the moment i have a dual 2 1/4 from cats back and into 2 in 2 out muffler, with std headers and cats still, herrod said that changing my headers wont make much of a diff but putting their twin 2 1.2 inch into single 3inch with 2 mufflers would make more of a differance than headers so now im confussed well even more confussed then before. what i wanna know who has this system on their car or ute and is happy with it.
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#2 | ||
FF.Com.Au Hardcore
Join Date: Jan 2005
Location: ACT
Posts: 11,647
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Full Noise has a Herrods XR8 Ute. I would assume that his exhaust was fitted by Rob. You could send him a PM. I'm sure he would be able to help
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#3 | ||
Formerly known as TS 50
Join Date: Dec 2004
Location: NEWCASTLE
Posts: 1,617
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What crap. Put a set of tri y extactors on and some high flow cats with your 2.25 twin exhaust system and watch it go after that! You'll be happy at half the cost of herrods system.
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BLUEPRINT T3 TS50 #109, MANUAL WITH BREMBOS
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#4 | ||
SS Grunt
Join Date: Oct 2005
Location: Melbourne-DEER PARK
Posts: 1,091
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Would Tri y's still flow good and make more power then the stock xr8 2 ones which r 4 into 1 but pretty small. how would tri y's flow at 6500rpm. also what costs
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#5 | ||
FF.Com.Au Hardcore
Join Date: Sep 2005
Location: Perth, Western Australia
Posts: 570
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do you take your car to 6500 often dude??
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01 AUII XLS Regency Red Ute 4.0L Egas Auto Mods -transcooler, tickford intake, K&N pod filter, Pacemakers, 2.5 inch exhaust, Crow Cam, 1981 XD Fairmont 351 - 351 Cleveland, ARP bolts, flat top pistons, Stage 3 Dynotec cam, ported 2V heads with 4V valves, Roller Rockers, Weiand manifold, Mighty Demon, 1/2" fuel lines with blue Holley fuel pump, Crane hi-6 ignition, B&M megashifter, C4, hi-stall, shift kit, 3.77 Ford 9" LSD. Thanks to: EvilChief and SJW Performance |
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#6 | |||
Banned
Join Date: Jan 2005
Location: Beaumont Hills
Posts: 2,536
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#7 | ||
Formerly known as TS 50
Join Date: Dec 2004
Location: NEWCASTLE
Posts: 1,617
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Tri Y extractors will give you a better bottom and mid range torque. I wouldn't think you notice the difference at 6000rpm.
I changed my herrod exractors 4 into 1 to Tri y and haven't looked back. Very happy
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BLUEPRINT T3 TS50 #109, MANUAL WITH BREMBOS
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#8 | |||
FF.Com.Au Hardcore
Join Date: Dec 2004
Location: Melbourne
Posts: 2,256
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Quote:
It produces heaps of torque down low, and has plenty of meat everywhere in the rev range. It would go very well with your car with the amount of power you are getting. Her ute is producing nearly 180 kw's at the wheels and is an auto. My 200 kw ute has the same extractors and system, but doesnt have the rear muffler, only a hot dog and is a standard unopened engine and has not suffered any torque loss, and has much improved throttle response, and has a great midrange. You will be happy with the results, as i am with both the utes, also they both sound very tough. |
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#9 | |||
force fed
Join Date: Jan 2006
Posts: 49
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Quote:
So if you gain a little in the top of the rev range is it a performance exhaust? NO.. You should make noticable gain accross the hole driving range not in one area. The first area were a good exhaust should work is in the low range.1000 to 2500 rpm this is were you will notice the diffarance in a good set of headers, try Y headers work there magic in this area. Then there should be a gain in the mid range eg: 2500 to 4500rpm. Lastly the high driving range 4500 to 6000+ is much less important because you dont drive in this range very often, this rev range is less affected by the headers, & more affected by the sort of exhaust you have. This is were 4 into 1 headers work.. |
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#10 | |||
FF.Com.Au Hardcore
Join Date: Dec 2004
Location: Melbourne
Posts: 2,256
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Quote:
Performance wise, mine picked up a good 30 rwhp, and a fair bit of torque from idle, right thru till the top end, though, it started dropping off after the midrange, but was still heaps more than the stock exhaust. Mine has done a best of 14.7 down the 1/4 mile with a 2.2 60 foot time, and i had to idle it off the line because it will bag up the tyres to 60 feet.... mods on mine are only the exhaust, 1/2 inch phenolic spacer, 1.7 rollers and a tickford 70mm throttle body. I can drive the car in 5th gear at 1000 rpm, and accelerate away no problems in 5th! If that dont show you that its got plenty of torque down low, i dont know what will! I have a hard time trying to launch it off the line because it wheelspins if i rev it over 2000 rpm. I have 2 cars with the same exhaust, one auto, one manual, both work well!! |
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#11 | ||
SS Grunt
Join Date: Oct 2005
Location: Melbourne-DEER PARK
Posts: 1,091
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Well seems 2 be some happy with tri y's and some happy with 4into1's, my ute is auto and has stealth tune and has 182rwkw what that is at engine, but rod herrod saw my front half (headers) when he tuned it and said why no change considering ive done cam, ported heads, big valves, balanced, acl race series kit, rollers, 70mm tick throttle, rev limiter at 6600 cause was still making torque and power at 6400 on dyno. so i may as well change the headers just to say they are changed true, but now herrod say they are fine get rid of my back half and put theirs on. confussing why change their first thoughts. oh and thanks for the good replys.
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#12 | ||
.
Join Date: Dec 2004
Location: Bundoora
Posts: 7,199
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A lot of people have said headers give power, exhaust give noise. Sure, a good setup cat back system will improve flow and a bit more power, as well as cats, but when you look at the big picture it makes sense to improve the flow directly from out of the engine where stock headers can be restrictive
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#13 | ||
SS Grunt
Join Date: Oct 2005
Location: Melbourne-DEER PARK
Posts: 1,091
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Any chances anyone has a sound file i could listen 2?
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#15 | ||
.
Join Date: Dec 2004
Location: Bundoora
Posts: 7,199
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Phil, the both of you are bloody hoons! Lovely note though!
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#16 | ||
SS Grunt
Join Date: Oct 2005
Location: Melbourne-DEER PARK
Posts: 1,091
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hey phil can i just ask how come your missus has more power then you do?? does hers feel much more powerful then what yours does
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#17 | ||
FF.Com.Au Hardcore
Join Date: Aug 2005
Location: melbourne
Posts: 1,258
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In typical cases with stock 200 spec xr8's what gains are seen from just a cat back twin 2.25 compared to tri Ys and a full system?? just wanna know if it would be worth my while(and wallet) to go the whole hog on my au3 xr8 ute(auto)......
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#18 | |||
FF.Com.Au Hardcore
Join Date: Dec 2004
Location: Melbourne
Posts: 2,256
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Quote:
It has a herrod motorsport cam , and a chip, the original owner had that all done when bought new. Ive never run hers down the 1/4, and am not sure what it will run, but it certainly does go just as good, mine just doesnt get off the line easy. Hers with an edit will be a weapon on the street. Mine is a bit more frisky because its a manual..lol. |
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#19 | |||
.
Join Date: Dec 2004
Location: Bundoora
Posts: 7,199
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#20 | ||
Miami Pilot
![]() Join Date: Jan 2005
Location: ACT
Posts: 21,701
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Gee, I've never said this to a bloke before, but I prefer yours to your missus! Your exhaust is lumpy! Love it.
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The Hammer: FG GTE | 376rwkw | 1/4 mile 11.793 @ 119.75mph 1.733 60' (4408lb) 1 of 60 FG MK1 335 GTEs (1 of 118 FG Mk 1 & 2 335 GTEs). Mods: Tune, HSD/ShockWorks, black GT335 19” staggered replicas with 245 & 275/35/19 Michelin Pilot sport 5s Daily: BF2 Fairmont Ghia I6 ZF, machine face GT335 19” staggered Replicas with 245s and 275s, Bilsteins & Kings FPV 335 build stats: <click here> Ford Performance Club ACT |
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#21 | |||
Miami Pilot
![]() Join Date: Jan 2005
Location: ACT
Posts: 21,701
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Quote:
I reckon do the cats back first, see how that goes, and if you still want more then consider after market extractors. With the power you already have, I doubt it will make much difference whether you get Tri-Y or 4-1s. Both should give a gain everywhere.
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The Hammer: FG GTE | 376rwkw | 1/4 mile 11.793 @ 119.75mph 1.733 60' (4408lb) 1 of 60 FG MK1 335 GTEs (1 of 118 FG Mk 1 & 2 335 GTEs). Mods: Tune, HSD/ShockWorks, black GT335 19” staggered replicas with 245 & 275/35/19 Michelin Pilot sport 5s Daily: BF2 Fairmont Ghia I6 ZF, machine face GT335 19” staggered Replicas with 245s and 275s, Bilsteins & Kings FPV 335 build stats: <click here> Ford Performance Club ACT |
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#22 | |||
FF.Com.Au Hardcore
Join Date: Dec 2004
Location: hunter valley
Posts: 1,925
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Quote:
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#23 | |||
FF.Com.Au Hardcore
Join Date: Dec 2004
Location: Melbourne
Posts: 2,256
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Quote:
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#24 | |||
force fed
Join Date: Jan 2006
Posts: 49
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Quote:
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#25 | ||
force fed
Join Date: Jan 2006
Posts: 49
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[QUOTE=philstoj]
My 200 kw ute has the same extractors and system, but doesnt have the rear muffler, only a hot dog and is a standard unopened engine and has not suffered any torque loss, and has much improved throttle response, and has a great midrange. Sorry didn't mean to sound like a smart ***. But like I said in my post. [You should make noticable gain accross the hole driving range not in one area.] |
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#26 | |||
FF.Com.Au Hardcore
Join Date: Dec 2004
Location: Melbourne
Posts: 2,256
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Quote:
30 rwhp, and stronger everywhere, is that a performance gain? |
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