Top 5 Mod's imo
2. Rec Valve
Combine all the above to see 300+ bhp and you will have a seriously fast A4.
Chip = anything from $300 - $1000 but this depends on if you replace the
turbo, if you do make, sure you get a chip to match the new turbo, APR/REVO
etc are a good start
Turbo - Don't bother with the TT/S3's KKK BW turbo, go for a big boy like a
Garret GT28, sky's the limit with this baby, as long as you have the money
:) $850 -$1400 depending on the power.
Currently you have a K03 in your Audi, the TT 225 bhp comes with a K04 which
is slightly bigger, but not worth the upgrade cost, due to limited
performance, but if you just want to see 250bhp then the K04 route is the
REC valve is cheap as hell, just replace it with a TT one, cost is around
$30, or go for a bailey or similar.
Airbox - The main company here is Carbonio this will complement your new
turbo and chip well.
Exhaust - the choice is yours here,. depends on sound, do you want loud or
subtle? go for a custom made one if you can, in the UK we have companies
like Longlife etc, or buy a ready made one, like Scorpion/Apexi/Borla.
Miltek seem to be the tuners favourite, but expect to pay $500+
Don't forget to upgrade your clutch, all the extra power will soon wear it
Hope this has helped :)
Good list, but I dunno about the intake. I have seen info that says
these are way overrated. Especially the type that source their air from
under the hood versus the stock system that uses cooler, outside air. I
would think you'd be better off doing something custom that gets air
from, say, the wheel well, versus the style that look nice and cost a
lot of money but are competely under the hood.
'04 A4 1.8Tq MT-6
Central NJ USA
It can get pretty expensive. Take the numbers that Ronny gave you, then
figure throwing in a new clutch and possibly a new tranny. You might want
to upgrade the suspension as well. It all adds up. Personally, I think I'd
consider maybe a slightly older S4 Avant. This may prove to be a more
reliable solution in the long run. Also, some people don't like the
characteristic of turbo spool up and the delayed acceleration response it
provides. By going with a larger turbo, this issue will just get amplified.
Make sure you're OK with that.
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