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Old 03-31-2011, 10:13 PM   #1
armadatilem
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Default Downpipe without tune

Hey guys, I was wondering what gonna happen to my car if I put a downpipe without having an accessport ?

Can we do that ?
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Old 03-31-2011, 10:17 PM   #2
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If you have no other work done to your car u should be fine... I had a full tbe and bov before I got an accessport and I had no issues. My tuner said once I went with a new intake then u have to tune. Also u don't need an accessport to get tuned...
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Old 03-31-2011, 10:19 PM   #3
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Most tuners would tell you that its really bad for your car to not get tuned after changing the downpipe from stock. Boost spike is a possibility......could mean blowing stuff up. Just my 2 cents.
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Old 03-31-2011, 10:20 PM   #4
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Wait wait wait, before you listen to ditchthefury, you have to answer this, is it a catted or catless dp? Catless you need a tune, catted you really should have a tune, but you can get away without it...highly not recommended. Its always best to tune your car. Boost creep is a possibility with both, a given with a catless dp. Always talk to your local tuner for advice, not the internet. Anybody can put whatever they want here, tuners are professionals and get paid to do things right. Value their opinion above all others.
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Old 03-31-2011, 10:28 PM   #5
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Forgot to mention, it would be with a catback, so TBE without accessport.

Don't know yet if catted or catless.
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Old 03-31-2011, 10:32 PM   #6
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Get a tune.

/thread
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Old 03-31-2011, 10:40 PM   #7
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Quote:
Originally Posted by armadatilem View Post
Hey guys, I was wondering what gonna happen to my car if I put a downpipe without having an accessport ?

Can we do that ?
Nothing, I have a COBB down pipe on my 02 WRX and it runs perfectly and I have no tune on my car.
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Old 03-31-2011, 10:51 PM   #8
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Cobb is catted. Catted dp without a tune can work, depending on brand and other mods. Just because one person does it, doesn't make it a fact that applies to all. There is a good amount of people who do run a catted dp without a tune, but a lot more with a tune, you'll gain the full potential of your car with a tune.
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Old 03-31-2011, 10:53 PM   #9
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why leave anything to chance?? just wait and get a tune
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Old 03-31-2011, 10:55 PM   #10
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Quote:
Originally Posted by JoshVass View Post
Nothing, I have a COBB down pipe on my 02 WRX and it runs perfectly and I have no tune on my car.

02's are known to have some pretty laid back ecu settings and can adjust for it....04-05 I know had some strict parameters. Its in a sticky on here
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Old 03-31-2011, 11:13 PM   #11
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Downpipe FAQ....it's a sticky thread at the top of this forum inside the Unabomber's Manifesto. Read it before you get more horrific advice.
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Old 03-31-2011, 11:18 PM   #12
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Quote:
Originally Posted by JoshVass

Nothing, I have a COBB down pipe on my 02 WRX and it runs perfectly and I have no tune on my car.
02 is a whole different ball of wax. They run rich to begin with. I had a catless TB without a tune and it ran great.

OP. Read the manifesto. Ultimately, just get a tune. Better safe then sorry later. If you can't afford a tune then wait to put on the exhaust.
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Old 03-31-2011, 11:19 PM   #13
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Quote:
Originally Posted by Ditchthefury View Post
If you have no other work done to your car u should be fine... I had a full tbe and bov before I got an accessport and I had no issues. My tuner said once I went with a new intake then u have to tune. Also u don't need an accessport to get tuned...
Quote:
Originally Posted by JoshVass View Post
Nothing, I have a COBB down pipe on my 02 WRX and it runs perfectly and I have no tune on my car.


Dont do it without a tune. It will not run safe. Plus how would you even be benefiting from it if you don't tune for it? Just a few things to think about
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Old 03-31-2011, 11:22 PM   #14
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Quote:
Originally Posted by Ditchthefury View Post
If you have no other work done to your car u should be fine... I had a full tbe and bov before I got an accessport and I had no issues. My tuner said once I went with a new intake then u have to tune. Also u don't need an accessport to get tuned...
Wrong, repercussions for a DP sans tune with a VF52 are different than with a TD04, that said I would never add an aftermarket DP (from stock) with a TD04 without a tune either.

Quote:
Originally Posted by armadatilem View Post
Hey guys, I was wondering what gonna happen to my car if I put a downpipe without having an accessport ?

Can we do that ?
No


Quote:
Originally Posted by JoshVass View Post
Nothing, I have a COBB down pipe on my 02 WRX and it runs perfectly and I have no tune on my car.
See this\/\/ completly difrent engine and turbo.

Quote:
Originally Posted by krauser2 View Post
02's are known to have some pretty laid back ecu settings and can adjust for it....04-05 I know had some strict parameters. Its in a sticky on here

Listen to Unabomber, read the sticky.
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Old 03-31-2011, 11:24 PM   #15
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Thanks guys !
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Old 03-31-2011, 11:30 PM   #16
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Why don't people just buy the AP before they get the downpipe? I realize the downpipe is going to be cheaper, but, it won't make more power(measurable) without a tune... You're better off getting the AP, run a stage 1 tune, buy the downpipe, then run the stage 2 tune... That way you won't risk blowing up your car, and you won't worry about it...
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Old 03-31-2011, 11:37 PM   #17
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cuz people want to skip stage 1 and go to stage 2 protune...
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Old 04-01-2011, 12:50 AM   #18
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Quote:
Originally Posted by JoshVass

Nothing, I have a COBB down pipe on my 02 WRX and it runs perfectly and I have no tune on my car.
As I stated earlier I also ran an 02 with downpipe and no tune.

Just to clarify. From the unabombers manifesto : Do I need engine management with a downpipe? For 02/03 WRX and 04-06 STI users, no.

So with the 02 ecu and td04 you don't need a tune.
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Old 04-01-2011, 03:59 AM   #19
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Quote:
Originally Posted by drewvdw View Post
Get a tune.

/thread

This.


Quote:
Originally Posted by JoshVass View Post
Nothing, I have a COBB down pipe on my 02 WRX and it runs perfectly and I have no tune on my car.
The early WRX's didn't need tunes as they ran pig-rich from the factory. New WRX's run on the edge of engine-exploding-lean from the factory to pass emissions.
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Old 04-01-2011, 04:04 AM   #20
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The people telling you "it's fine" fit this analogy:

Will something happen if you drink 2 beers and drive your car? Chances are, no. But there are some consequences that will leave you regretful if they actually happened.

Get a tune. Stop saving all your money for one mod for the sake of feeling giddy.
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Old 04-01-2011, 04:23 AM   #21
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The best way to settle this once and for all is to go read it for yourself:

Unabomber's Downpipe FAQ: http://forums.nasioc.com/forums/showthread.php?t=445812

Take from Unabomber's Manifesto: http://forums.nasioc.com/forums/showthread.php?t=533787

There is a very good reason the manifesto is in the stickes at the top of this forum, whole treasure trove of information there.
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Old 04-01-2011, 08:51 AM   #22
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I did this for a while but I have a 04, I bet the new wrx's will throw your car into limp mode without a tune.
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Old 04-01-2011, 11:27 AM   #23
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Close this thread, I understood all that 8 posts ago.
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Old 04-01-2011, 12:13 PM   #24
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Quote:
Originally Posted by drewvdw View Post
cuz people want to skip stage 1 and go to stage 2 protune...
Yeah but getting a downpipe then trying to get away with no tune is just a backwards way of thinking.
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Old 04-01-2011, 01:21 PM   #25
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Quote:
Originally Posted by armadatilem View Post
Close this thread, I understood all that 8 posts ago.
woahh settle down there, ppl are trying to help so dont get smart with people in here

next time search dumb ass
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