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JMM race series extractors 

 

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 Post subject: JMM race series extractors
Posted: Mon Apr 09, 2007 2:04 am 
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G'day, I'm tossing up between the JMM race series or the Pacemaker Comps. Does anyone have any of these, and is there much of a performance increase?

Do you think i would notice a difference in low down torque and power?

 

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EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come

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Posted: Mon Apr 09, 2007 3:01 am 
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the pacemaker comps are designed for mid to high rpm power im pretty sure, not sure about the JMM design, have a look at there website.

 

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 Post subject: Re: JMM race series extractors
Posted: Mon Apr 09, 2007 10:30 am 
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GeZza200 wrote:
G'day, I'm tossing up between the JMM race series or the Pacemaker Comps. Does anyone have any of these, and is there much of a performance increase?

Do you think i would notice a difference in low down torque and power?


I have a set, (pacemakers comps) and yes they did increase power from mid to high, and also helped with the std engine to pull higher up the rev range. And that was just seat of the pants stuff.....was definatley noticeable.

 

 

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My homemade Exhaust on 88EA sedan. 005.jpg
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Posted: Mon Apr 09, 2007 10:51 am 
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ok thx for your replys, if they are giving you more power at mid-high range does that mean there is maybe a loss in low end power?

 

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EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come

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Posted: Mon Apr 09, 2007 11:16 am 
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GeZza200 wrote:
ok thx for your replys, if they are giving you more power at mid-high range does that mean there is maybe a loss in low end power?


I haven't noticed that, I think bottom end is a bit better than it was.
Depending on surface finish, the 88EA will chirp/spin the wheels on hard accel, has 5sp, 3.27LSD, MPFI, original 178,000k's 3.9 engine., in 1st and is fitted with B'stone Eagers 235/60R15's.
Figure from that???

 

 

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Posted: Mon Apr 09, 2007 11:32 am 
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i have the jmm race series extractors and am pretty happy with them

 

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Posted: Mon Apr 09, 2007 12:22 pm 
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Neo_nick wrote:
i have the jmm race series extractors and am pretty happy with them


Did it feel like it pulled harder when you gave it to it, or didn't notice it much?

 

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EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come

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Posted: Mon Apr 09, 2007 2:23 pm 
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I'm in a similar position, but was deciding between pacemaker 4499's and 4480's. People keep saying the smaller secondary's are better etc.. the main difference is they are 6>2>1 (4499) Vs 6>3>1 (4480).

So the smaller pipes are collectively offering a bigger flow as there are 3 x 44mm, rather than 2 x 48mm!

Does anyone have dyno results of before and after with just exhaust mods? JMM series or Pacemakers?

 

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Posted: Mon Apr 09, 2007 7:09 pm 
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GeZza200 wrote:
Neo_nick wrote:
i have the jmm race series extractors and am pretty happy with them


Did it feel like it pulled harder when you gave it to it, or didn't notice it much?

It hammered over factory exhaust!

Pulled shhit loads more - after 2500 it just flys thru the rev range

 

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 Post subject: extractors
Posted: Mon Apr 09, 2007 10:04 pm 
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go pacies there are cheaper and will give similar power increase to jmm wich pacies is up to u do u wont more mid range or top end.

 

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Posted: Mon Apr 09, 2007 10:06 pm 
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i want power all the way through the rev range, i got an auto and a 3.08 diff, so low range would be good so i can get off the line quicker. but i want power all the way through

 

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EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come

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Posted: Mon Apr 09, 2007 10:13 pm 
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GeZza200 wrote:
i want power all the way through the rev range, i got an auto and a 3.08 diff, so low range would be good so i can get off the line quicker. but i want power all the way through



If you still have the stock exhaust manifold, its only gonna help.

 

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Posted: Tue Apr 10, 2007 1:12 am 
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from what ive herd, their very very similar as in design and peformance

 

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Posted: Tue Apr 10, 2007 1:25 am 
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Very different design. The JMM race series are like the old pacemaker comps - 6-2-1 with narrow primaries and very long secondaries. The current pacemaker comps are a 6-3-1 tuned length configuration.

I have heard as many people say they prefer one as the other. Other than the sound (which is very different) there probably isnt all that much difference between them performance wise. If you believe what JMM say, he claims to have tested the pacemaker comps and claims that although they made the same power on the dyno the race series are 2/10s quicker down the 1/4. I spoke to someone who had run both on his car and he said the pacemakers were noticably better on road and made 5rwkw more on the dyno.

who do you believe?

As I said, I dont think there is much in it. I would still go the pacemakers

 

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Posted: Tue Apr 10, 2007 12:30 pm 
Getting Side Ways
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Age: 29

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Ride: 98 EL Futura

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I went down to the local exhaust shop and he quoted me $560 for the Pacemakers comps and $710 fitted. does that sound a bit steap to you?

 

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EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come

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