L-series header advice

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Alex
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L-series header advice

Post by Alex » Tue Aug 29, 2006 8:49 pm

gday all

my 3inch liftkit is finally in!...we had some minor problems with the tailshaft rubbing on my exhaust, it just needs some cutting/re-welding etc etc...

to the question, im thinking of getting some catless headers and when they re-do my exhaust just get them to shove the new headers in...

is this a wise option? can i expect more power? fuel economy? any other pros/cons?

by the way...its a 1990 L-series sportswagon, and i currently have a 2.5inch cat-back sports exhaust

cheers
Alex
my07 Outback
my13 Hyundai i45(shhhh)
my02 Gen3 Liberty limited ed.

previously
L-series wagon, LSD, EJ20turbo, 29in tyres, 'wanky wagon'
2000 gen3 outback, lifted, otherwise stock.

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waggaclint
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Post by waggaclint » Tue Aug 29, 2006 9:04 pm

ive got lukey headers on mine its not lifted but they are good it did make it go better and better on fuel to hey....id recomend putn em on hey....
2011 Forester X

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SuBaRiNo
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Post by SuBaRiNo » Tue Aug 29, 2006 9:23 pm

I have heard mixed reports about the benefits of removing the Cat... some have said the power increase is noticable... similar to that noticed when air con is ON compared to air con OFF.

Some say it makes no difference and it is simply a polution control device. I on the other hand have never actually had one in any of my subies. EA81 never had em and my ej22 had no space for the Cat so it was removed.

Dave
EJ conversion wiring harness cut downs available. Please PM or email ([email protected]) for details.

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Suba
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Post by Suba » Tue Aug 29, 2006 11:23 pm

SuBaRiNo wrote: EA81 never had em
Dave
Some of them did Dave :).

Mike.
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smoov
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Post by smoov » Wed Aug 30, 2006 10:24 am

Don't know how strict its policed over your way, but make sure you realise the legalities, or lack of, by not running a cat.

legalities aside, i ran catless headers when I had my L. It made a difference. Difference to power (having said that, my headers were shot anyways, with leaking flanges.) It'll make a difference to your wallet. $200 vs $700 for catless vs catted headers.

I would do the exhaust. makes for a good grounds for power increase.

you said that you had 2.5"? I think that's an excessive size for a 1.8. You would even get a better power increase if you were to drop to 2", some would say 2.25". This is because the motor does require some backpressure, for improved combustion.
1998 Subaru Legacy GTB

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Subafury
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Post by Subafury » Wed Aug 30, 2006 10:30 pm

smoov wrote:you said that you had 2.5"? I think that's an excessive size for a 1.8. You would even get a better power increase if you were to drop to 2", some would say 2.25".
He's thinking ahead smoov, the exhaust is all ready for a turbo to be bolted on! :p
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