tonyc4s

http://weistec.com/all/c/c-400-450/2...c400-c450.html

Has anyone installed?

chynatown

Just ordered mine!!!!

tmoneyC450amg

Says one hour install, true or false? Thought DPs are more of a pain than an exhaust even

cajun1689

We are ordering some to review will let you know once we install them!

LogicDSS

I hope you have someone that will rewrite your ECU to adapt to the new O2 and pressure. By default, the OEM ECU mapping will cut the turbos at about 60℅ in order to protect them.

I am at this point with my downpipes right now. My ECU guy should have a new mapping for me this week and we'll go do some dyno runs to see if it worked.

chynatown

Just wanted to see if you've installed these yet? If so, install time and do you notice a difference in sound and power?

janusgrimnitz

I dont have the C450 but I installed a new downpipe on my C200 and noticed quite a big difference in the sound... And a little more low end power.. But might just be the sound that made me believe that.. haha

C43_AMG_NJ

I have Weistec DP installed and AMR stage 2 sounds like a beast now and the power is amazing, I drove home from Connecticut for almost 2 hours with no Radio just enjoying the drive, it's crazy how much the car has changed I took the car to the track that night and ran a 12.2 118mph and I screwed up my take off think I will hit high 11s.

chynatown

That's Awesome!! How long did it take to install the down pipes??

jatt143

I installed the same one on my C300. if you open the entire airbox (intake box) and get to o-ring clamp easy it's about 1hr.

hard part is to get the old piece out from top (by turbo) bottom is easy

C43_AMG_NJ

Took only 2 hours keep in mind you will only gain a max of about 5-15hp with the down pipes and with stage 2 only 25 more hp cause our turbos are to small and the max PSI you will get is 20.

InTheBenz0

5 whp or so sounds about right (but they sound amazing).

12.2 at 115-116 is what flashed cars (AMR stage 1 and OE Tuning) are running from a couple other members. So since you added the downpipes, and ran the same time, similar 60' and basically same trap, they are mainly for sound because the turbos are just maxed out.

Blacked out E63

What do mean by OE Tuning (flash only) going that fast? OE tuning blog and youtube states that OE Tuning's quickest pass was of 12.68. Unless you have slips or times showing otherwise?

I've seen the timeslips for AMR stage 1 and the track video of AMR stage 1 going 12.3 and the posted slip of the member above going 12.2 at 115-116mph.

Seems AMR equipped cars are the only ones putting down good track times and power.

chynatown

Getting these beauties installed tomorrow morning. I'm not sure about the gains, but hopefully it will sound amazing!!!
Once these are installed, I will get it on the Dyno next week to see what kind of hp it makes......

LogicDSS

I hope you will apply an ecu tune after you install the pipes, otherwise I can tell you already that your ecu will cut the psi of the turbos by 40%.

sliqdaddy91

could we get a sound clip for those that have it installed?

crocoss

Sound clip please man

I am waiting to put those on my C450, let us know how long it took u to put them on, how hard of a job it is and your overall review about them,,,

Best of luck

off_the_ciling

Its not hard at all, I would highly recommend using a lift. Should take 1-2 hours depending on if you've done it before or not. All you have to do is pull air boxes off, pull under tray off, take o2's off, take off all of the clamps, unbolt the bracket on the downpipe and pull it out. Put the new downpipes in and clamp it on the turbo first, then midpipe, then do the bolts on the bracket.

chynatown

Here's a quick video shot right after the install!!! I will post another video after i get my car re-tuned!!

sliqdaddy91

Chynatown, thank you and I'm looking forward to your next video. What exhaust do you have?

chynatown

This is just stock exhaust!! I have the MEISTERSCHAFT GTC exhaust and LSR pipe in mind, but i'll wait to see what the boys at the shop say when they get back from SEMA......

chynatown

Does anybody else with the Weistec downpipes installed notice that the exhaust sounds a little tinny???

off_the_ciling

Does it only sound like that during cold start?

chynatown

It happens when I hammer on the gas.....

B2FiNiTY

That's pretty typical when you remove your cats.