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4499's have made my car slower i think 

 

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 Post subject: Re: 4499's have made my car slower i think
Posted: Mon Jun 28, 2010 2:04 am 
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tickford_6 wrote:
duderat wrote:
i got pacemaker 4499's fitted the other day to my el and i cant say iv noticed any power differences at all and perhaps even has made it a bit slower. its hard to tell but there is definatley no noticable gains. does this sound normal? i already had a 2.5" catback fitted





I highly doubt it.

before and after time slips will show. if the MPH is higher its making more power.


Going to talk too an exhaust bloke I know and see if he can modify the pacies 4499's with longer secondaries.............The fairmont runs a dream at the moment with the XR6 ecu 6JDA and XR6 fuel 300KPA reg.......... Soon too replace the stock 400CPI cat with a 200 cpi item........

cheers.............

 

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Last edited by EL___Fairmont on Mon Jun 28, 2010 10:38 am, edited 2 times in total.

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 Post subject: Re: 4499's have made my car slower i think
Posted: Mon Jun 28, 2010 2:35 am 
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WTF? 4499s make you launch slower? Even if you just plant the throttle from a standstill the stalls about 2k rpm which is well into the zone where these extractors will give you more power. If its a manual and it feels slower stop trying to launch it off idle in 2nd gear. :roll:

 

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 Post subject: Re: 4499's have made my car slower i think
Posted: Mon Jun 28, 2010 2:36 am 
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krisisdog wrote:
WTF? 4499s make you launch slower? Even if you just plant the throttle from a standstill the stalls about 2k rpm which is well into the zone where these extractors will give you more power. If its a manual and it feels slower stop trying to launch it off idle in 2nd gear. :roll:



Well I have just removed the 4499's and my fairmont is alot quicker too 60-70km/hr with the stock header.......

 

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Last edited by EL___Fairmont on Mon Jun 28, 2010 10:40 am, edited 1 time in total.

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 Post subject: Re: 4499's have made my car slower i think
Posted: Mon Jun 28, 2010 2:47 am 
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GeZza200 wrote:
stock EL would make about 105rwkw and i made 127rwkw with full exhaust 2.5" with high flow cat and 4480's, they do make a fair increase. You probably cant tell because the car revs up alot smoother now



The power your talking about is on a dyno high in the rev range.

 

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Last edited by EL___Fairmont on Mon Jun 28, 2010 10:40 am, edited 2 times in total.

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 Post subject: Re: 4499's have made my car slower i think
Posted: Mon Jun 28, 2010 2:50 am 
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krisisdog wrote:
WTF? 4499s make you launch slower? Even if you just plant the throttle from a standstill the stalls about 2k rpm which is well into the zone where these extractors will give you more power. If its a manual and it feels slower stop trying to launch it off idle in 2nd gear. :roll:


drive a auto for a bit.... they do make them slower especially when in heavy traffic.....

 

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Last edited by EL___Fairmont on Mon Jun 28, 2010 10:32 am, edited 1 time in total.

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 Post subject: Re: 4499's have made my car slower i think
Posted: Mon Jun 28, 2010 3:07 am 
Getting Side Ways
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The car I bought a year ago was an auto EF mont. Fitted 4499s and a catback - noticeable improvement.

 

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 Post subject: Re: 4499's have made my car slower i think
Posted: Mon Jun 28, 2010 8:22 am 
Getting Side Ways
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WHen I got mine fitted on the AU Xr6 there was a noticable gain, the car didn't sound to great at first but then when it carboned up it sounded great, give it time and let the ecu learn

 

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 Post subject: Re: 4499's have made my car slower i think
Posted: Mon Jun 28, 2010 10:45 am 
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So you reset the ecu by disconecting the batery for halfa?

Krisisdog- my 5speed feels slower off the mark.
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 Post subject: Re: 4499's have made my car slower i think
Posted: Mon Jun 28, 2010 11:00 am 
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87SIlude wrote:
So you reset the ecu by disconecting the batery for halfa?

Krisisdog- my 5speed feels slower off the mark.


Learn to launch it with a few revs then! There is no way your car will be slower with 4499s than the stock headers.

 

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 Post subject: Re: 4499's have made my car slower i think
Posted: Mon Jun 28, 2010 12:25 pm 
Getting Side Ways
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I have 4480's......I didn't notice any loss in the bottom end, but did notice big gains in mid to high end. I haven't increased the CR, or fitted a cam. I have however p&p the head.
Here's a link to my Garage site.
the-garage-f53/new-ed-project-car-t73529.html

 

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 Post subject: Re: 4499's have made my car slower i think
Posted: Mon Jun 28, 2010 7:59 pm 
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Ok this morning I reset my ecu and car is much better.
But still sluggish off the line. Maybe I need to practice.
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 Post subject: Re: 4499's have made my car slower i think
Posted: Tue Jun 29, 2010 12:11 am 
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Getting there.
My old car would launch hardest from around 2400rpm but it was a prelude so redlined at 6200.

Looking for this "hot spot" tonight,seemed to launch hardest around 1200-1500.
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 Post subject: Re: 4499's have made my car slower i think
Posted: Tue Jun 29, 2010 12:16 am 
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With a manual, the hardest launch is around 4-4400rpm. It feels smooth, not fast, but watching 60' times at the drags proove it is the fastest.

 

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 Post subject: Re: 4499's have made my car slower i think
Posted: Tue Jun 29, 2010 12:25 am 
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pretty certain my clutch is almost past its used by.
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 Post subject: Re: 4499's have made my car slower i think
Posted: Tue Jun 29, 2010 12:33 am 
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1500? No wonder you cant get off the line lol. More revs, more clutch slip.

 

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