ProtegeES03
Member
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- '03 ES
Approximately how much power could be gained (whp/torque) by adding a 4-2-1 header, downpipe w/ hf cat, and 2.25" catback exhaust to the 2003 sedan ES. I'm totally clueless but would guess about 15/20?
How much power would this make?
- Thread starter ProtegeES03
- Start date
dudeondacouch
Member
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- LegacyGT Wagon of Awesome
that sounds a bit optimistic... prolly more like 12/15...
ProtegeES03
Member
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- '03 ES
looks like product dyno #s are REALLY optimistic then.
twilightprotege
Member
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- 2001 323 Astina SP20 (P5)
product dyno numbers are dodgy - almost never trust them.
have a look in the NA tech section dyno graphs. i'm pretty sure there are graphs of that
have a look in the NA tech section dyno graphs. i'm pretty sure there are graphs of that
dudeondacouch
Member
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- LegacyGT Wagon of Awesome
You might want to be more specific with what you are thinking of installing. For example, which header? shorty w/ primary h/f cat? or full length w/ cat in midpipe? also what brand of header? The AWR header ($499) with custom mandrel bent 2.5" header-back system (no cats) gained right at 20whp. This would basically represent the most efficient, free-flowing system for N/A FS-DE. However, a significant loss of lower end power will result with this setup.
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ProtegeES03
Member
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- '03 ES
I was thinking about the ES 4-2-1 header+downpipe w/hf cat. Not sure what brand of catback I want to use... maybe custom 2.25" or maybe jic...
btw, does the sedan have 1 or 2 cats.
btw, does the sedan have 1 or 2 cats.
twilightprotege
Member
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- 2001 323 Astina SP20 (P5)
stock all 2.0L 3rd gens have 2 cats
dudeondacouch
Member
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- LegacyGT Wagon of Awesome
check the chart...Gen1GT said:
http://www.msprotege.com/forum/attachment.php?attachmentid=21290
Looks like around 20 peak gain to me
The description is a bit ambiguous though.... "cam gear set to 0,0" this could indicate aggressive cams... not sure whose graph it is... but admittedly, yes, it is more than i expected... I would say at least 15 though.
ProtegeES03
Member
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- '03 ES
10whp and some sound 
FS engine.
FS engine.
twilightprotege
Member
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- 2001 323 Astina SP20 (P5)
dude that's my graph - i have head work and cams and a 2.5" mandrel bent system
you're better off looking at the NA dyno graph thread - the last one i posted has something like what you're thinking of
you're better off looking at the NA dyno graph thread - the last one i posted has something like what you're thinking of
dudeondacouch
Member
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- LegacyGT Wagon of Awesome
Ok... started to look fishy after i woke up from that dream... for some reason I wasn't making a sane connection there... i usually can't link to your stuff (work computer) Or maybe I've been up for too long reading f/i s***... no wait... i know what it was... i was thinking mp3 ecu also... your graph just blended in with my madness.
here's a quick tip... don't get a job you have to be at before 430am!
here's a quick tip... don't get a job you have to be at before 430am!
twilightprotege said:
bahahahah..i love it. Yeah dude, a header back with no restrictions will get you like 10-15whp..tops.
Its really hard to say. I have the AWR header, 2.25 cat-back, and an intake, and have probably gained 16-18 whp from stock. I wish I had dyno'd when I was bone stock, so I could say for sure. Also, I have a catless midpipe in my garage, and will dyno again after I install it (if I can ever make room in my garage so that I can jack up my car). That will show for sure how much these pure bolt ons can get you. Not too terrible for ~1500 bucks. Looking for more tho.
scorch70
scorch70
twilightprotege
Member
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- 2001 323 Astina SP20 (P5)
yeah i'm sure i'd have more with no cat and no resonators (or two less restrictive resonators). i'd still like to change the resonators out for freer flowing ones. well not until atleast next week. got a dyno day this weekend where i'm going to get a new base run
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- 2017 Shelby GT350
U get roughly 10whp just from the AWR header, so with a 2.25" header-back exhaust system with no cats......like everyone else says, your looking at 15-18whp, tops. And thats assuming you at least have an air intake system.
ProtegeES03
Member
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- '03 ES
I guess I'll have to add some large stickers and flames to get some serious speed at a fairly affordable price (flash)
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- 2017 Shelby GT350
Make sure there RED....they give the most whp.
ProtegeES03
Member
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- '03 ES
Oh I thought yellow, thanks for the pointer
dudeondacouch
Member
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- LegacyGT Wagon of Awesome
APC stickers add the most, they are red AND blue!
