[aflatau]

So Is it worth getting a charge pipe w some sort of aftermarket bov / dv combo?

Here are some notes to keep in mind.. I am running the stock charge pipe right now and its holding fine with the most boost I will be running on the stock turbos.. 17-18 psi..

I will not be running meth any time soon if at all.

[bigdnno98]

Originally Posted by aflatau

So Is it worth getting a charge pipe w some sort of aftermarket bov / dv combo?

Here are some notes to keep in mind.. I am running the stock charge pipe right now and its holding fine with the most boost I will be running on the stock turbos.. 17-18 psi..

I will not be running meth any time soon if at all.

No need to upgrade then if it's not leaking.

[E90SoFlo]

If not having a problem, don't change it.

Unless you want the BOV "whoosh"

[benzy89]

Unless you're getting offered a great deal on a meth setup now, then there's no reason to replace the OEM CP + DVs until they break.

[E90Company]

Waste of money, put it towards something better unless they are giving you issues.

[1thirtyfizzo]

So with a $400 budget. Is it better to get a vfrs downpipe or ER charge pipe w/ HKS BOV. Since i jus had a Cobb tune stage 1 on 93octane?

[kdiggz]

Originally Posted by 3thirtyfizzo

So with a $400 budget. Is it better to get a vfrs downpipe or ER charge pipe w/ HKS BOV. Since i jus had a Cobb tune stage 1 on 93octane?

i think you should get a blow off valve and a wing for morer downforces!

[M3_Dylan]

Downpipes

[benzy89]

Get the DPs -- You'll be able to run Stage 2 (Stage 2+ if you have an FMIC upgrade). Since you'll be running the Sport setting (Aggressive requires 93 octane), you shouldn't be over-stressing the stock CP + DVs

[1thirtyfizzo]

Originally Posted by kdiggz

i think you should get a blow off valve and a wing for morer downforces!

I already got wayyyy too much downforce already with my $59 ebay M3 rep wing and huge hp gains with the Dimisa 4" exhaust tips

[1thirtyfizzo]

Originally Posted by benzy89

Get the DPs -- You'll be able to run Stage 2 (Stage 2+ if you have an FMIC upgrade). Since you'll be running the Sport setting (Aggressive requires 93 octane), you shouldn't be over-stressing the stock CP + DVs

Im running aggressive stage 1 on 93octane now but i dont feel the surge of power like i used to when i 1st install it. I'd thought it was bc i have boost leaks but ima go with the DPs anyways and try out stage 2 like u suggested. How much gain can i get from stage 1 to2?

[benzy89]

Originally Posted by 3thirtyfizzo

Im running aggressive stage 1 on 93octane now but i dont feel the surge of power like i used to when i 1st install it. I'd thought it was bc i have boost leaks but ima go with the DPs anyways and try out stage 2 like u suggested. How much gain can i get from stage 1 to2?

Don't feel the surge of power from what?? From going Stg 1 Sport to Aggressive?? It is possible that you have a boost leak (or you've adjusted to the additional powr), which will only be more pronounced (and make any leak worse) as you increase the boost (like going from Stg 1 --> Stg 2).

DPs are AWESOME! It completely changes the sound of the car, I'm not a fan of the ricey/drone sound & spending $1k on an exhaust for 10-15 HP + noise is not worth it IMO. From Stage 1 Aggressive to Stage 2 Sport it won't be a "night and day" difference in performance, (Stg 1 Aggressive boost is about the same), but w/ the DPs the throttle response will increase since the turbos will be able to spool up more quickly.

My ER CP + Forge DVs are going in tomorrow since boost related problems (leaks, CP/DVs cracking, etc) were a concern of mine, the car is my DD. From what I've been told, the throttle response will def get a little more sharper w/ the upgraded CP (less restrictive then OEM) and the DVs will help hold the higher boost a lot better. IMO, if you love your car and are running 14 psi or higher, upgrading your CP + DV/BOV is very important to prevent something breaking.

[Rob1796]

Originally Posted by benzy89

My ER CP + Forge DVs are going in tomorrow...

Sorry for the thread hijack, but quick question. I ran a Forge BPV on my last car, and it was well known for its "ping" sound when you would lift and it would bypass. Are the ones for the 335i the same?

[benzy89]

Originally Posted by Rob1796

Sorry for the thread hijack, but quick question. I ran a Forge BPV on my last car, and it was well known for its "ping" sound when you would lift and it would bypass. Are the ones for the 335i the same?

Not sure wat the Forge By-Pass Valves sounded like, but the Forge DVs for this car operate exactly like the the OEM DVs -- Holds pressure & recirculates anything silently back into your intake tract. I decided to stay with the Diverter Valve setup (instead of switching over the BOVs) for three reasons:

1. BMW had it that way in the original design
2. I cannot stand the ricey whoosh sound, I like the silent sleeper perception
3. BOVs are much more likely to leak after heavy usage. They break, you need a replacement BOV ($$$). If the Forge DVs ever started leaking, I only need to speak $25 on a set of internal replacements (springs, bearings, etc)

[EASTCOASTNINJA]

Originally Posted by benzy89

Not sure wat the Forge By-Pass Valves sounded like, but the Forge DVs for this car operate exactly like the the OEM DVs -- Holds pressure & recirculates anything silently back into your intake tract. I decided to stay with the Diverter Valve setup (instead of switching over the BOVs) for three reasons:

1. BMW had it that way in the original design
2. I cannot stand the ricey whoosh sound, I like the silent sleeper perception
3. BOVs are much more likely to leak after heavy usage. They break, you need a replacement BOV ($$$). If the Forge DVs ever started leaking, I only need to speak $25 on a set of internal replacements (springs, bearings, etc)

^^^ Buy this man a beer, I totally agree. I have an Active Autowerke BOV but I'm about to go back to the stock setup. I like my car being "stock" lol

[cstavaru]

An aftermarket charge pipe is the last thing I would ever put in my car. Such a useless piece of pipe for like $250+, you can get lots of other useful things for the money.

However if you ever get one, get one with machined stock C-coupler, not one with clamps and silicone hoses.

[benzy89]

Originally Posted by cstavaru

An aftermarket charge pipe is the last thing I would ever put in my car. Such a useless piece of pipe for like $250+, you can get lots of other useful things for the money.

Agreed, but how the fuck are you injecting meth?? AFAIK, meth has to be injected through the charge pipe (since there are no aftermarket intake manifolds that have meth injection)??

[cstavaru]

Originally Posted by benzy89

Agreed, but how the fuck are you injecting meth?? AFAIK, meth has to be injected through the charge pipe (since there are no aftermarket intake manifolds that have meth injection)??

There is no need to use this kind of words. The OP specified that he has no intention to use methanol injection.

For meth there are meth elbows that can be used instead of the factory elbow, before the charge pipe. I made my own elbow. It is possible that some cars do not have an elbow (it is integrated into the charge pipe). In this case, a charge pipe is the only solution for methanol injection.

[Randomaccess335]

I have stock charge pipe/dv's no cracks holds boost up 18.5 psi
You don't need a new charge pipe for meth, I have a meth elbow.
And I believe any charge pipe can be tapped for meth
Anyway get the dp's now and waste your money on charge pipe later if u feel u need one
R

[Z3->WRX->335]

Don't get a charge pipe unless you get a P30FF code and can't find a boost leak anywhere else. My plastic DV's with 115,000 miles weren't up to the task of holding the extra boost from my tune

[EASTCOASTNINJA]

I just put my stocker back on and I'm happy with it, I sold my active autowerke BOV for $500 bucks to my friend and I'm just goin to get an elbow and start doing meth lol. The DV's work fine for me

[M3 Eater]

my ER charge pipe was affordable, allows me to use stock or after market diverter valves and holds about 1.5 psi more than my stocker ever did when tuned. It is available with bungs for meth, and they can be placed anywhere on the pipe. I'll never look back.