STILLEN G37 Supercharger Announcement!!!
06-11-2010, 04:54 PM
#347
Registered User
If all rumors are true...im back in the game^_^
alright for the sedans that are interested...i will be dropping my car off next week^_^...i will give up going to a local meet for this
alright for the sedans that are interested...i will be dropping my car off next week^_^...i will give up going to a local meet for this
Last edited by g37mobbin; 06-12-2010 at 04:12 AM.
06-18-2010, 08:20 PM
#352
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Join Date: May 2010
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I bought a forged bypass valve already, they run around $150. I don't know if it is necessary or not, I have heard horror stories about the Bosch bypass valves coming apart but almost all of those situtations where 20PSI or alot more.
06-18-2010, 08:25 PM
#353
well i just got my SC kit today and it went straight to the shop and the machanic said bosch fail over time and cause boost leak. they can not handle high temps. its already over 100 here in texas alone. It was the only piece to the kit he did not like
06-18-2010, 09:09 PM
#355
Registered User
^^ Which is why I'm gonna order my tuner kit without the bosch plastic valve or air filters. that way I can replace it with a Forge aluminum valve and dry type filters like Amsoil.
The Forge valve that you will need costs $155 at their site, and less if you look around.
Forge Motorsport | Alloy Fabrication
The problem with the plastic Bosch valve is higher boost (over 15 psi) and heat. They will boost leak and not operate properly. They come stock on 335i's and they always boost leak when they get chipped. My friend runs two of those on his 335i. Zero issues and he's pushing 390whp with his chip and bolt ons and that's in 145+F heat.
The Forge valve that you will need costs $155 at their site, and less if you look around.
Forge Motorsport | Alloy Fabrication
The problem with the plastic Bosch valve is higher boost (over 15 psi) and heat. They will boost leak and not operate properly. They come stock on 335i's and they always boost leak when they get chipped. My friend runs two of those on his 335i. Zero issues and he's pushing 390whp with his chip and bolt ons and that's in 145+F heat.
06-18-2010, 10:46 PM
#358
Registered User
BOV's may or may not be a good idea to use. Depending on the way it's setup, if the air is being released after it has already passed the MAF then it will result in a rich condition since the ECU is assuming the air is entering the engine rather than being vented to the atmosphere (such as during shifts).
This is ofcourse assuming the stock Bosch bypass valve is located after the MAF and the air is recirculated after the MAF as well. You don't want to recirculate it before the MAF or it will meter air that has already been metered. With the way Stillen routed the charge piping and installed the MAF sensors, I'm assuming the bypass valve is installed on the charge pipe and the air is being vented into the intake piping right after the MAF's and before the SC.
With that being said, you may be able to use a Forge Splitter, which is a bypass valve and a BOV in 1, it allows some air to recirculate and some vent into the atmosphere for the sound. It's adjustable too.
Forge Motorsport | Alloy Fabrication
Anyone has picture of the stock valve installed?
This is ofcourse assuming the stock Bosch bypass valve is located after the MAF and the air is recirculated after the MAF as well. You don't want to recirculate it before the MAF or it will meter air that has already been metered. With the way Stillen routed the charge piping and installed the MAF sensors, I'm assuming the bypass valve is installed on the charge pipe and the air is being vented into the intake piping right after the MAF's and before the SC.
With that being said, you may be able to use a Forge Splitter, which is a bypass valve and a BOV in 1, it allows some air to recirculate and some vent into the atmosphere for the sound. It's adjustable too.
Forge Motorsport | Alloy Fabrication
Anyone has picture of the stock valve installed?
06-18-2010, 10:50 PM
#359
BOV's may or may not be a good idea to use. Depending on the way it's setup, if the air is being released after it has already passed the MAF then it will result in a rich condition since the ECU is assuming the air is entering the engine rather than being vented to the atmosphere (such as during shifts).
This is ofcourse assuming the stock Bosch bypass valve is located after the MAF and the air is recirculated after the MAF as well. You don't want to recirculate it before the MAF or it will meter air that has already been metered. With the way Stillen routed the charge piping and installed the MAF sensors, I'm assuming the bypass valve is installed on the charge pipe and the air is being vented into the intake piping right after the MAF's and before the SC.
With that being said, you may be able to use a Forge Splitter, which is a bypass valve and a BOV in 1, it allows some air to recirculate and some vent into the atmosphere for the sound. It's adjustable too.
Forge Motorsport | Alloy Fabrication
Anyone has picture of the stock valve installed?
This is ofcourse assuming the stock Bosch bypass valve is located after the MAF and the air is recirculated after the MAF as well. You don't want to recirculate it before the MAF or it will meter air that has already been metered. With the way Stillen routed the charge piping and installed the MAF sensors, I'm assuming the bypass valve is installed on the charge pipe and the air is being vented into the intake piping right after the MAF's and before the SC.
With that being said, you may be able to use a Forge Splitter, which is a bypass valve and a BOV in 1, it allows some air to recirculate and some vent into the atmosphere for the sound. It's adjustable too.
Forge Motorsport | Alloy Fabrication
Anyone has picture of the stock valve installed?
06-18-2010, 11:21 PM
#360
BOV's may or may not be a good idea to use. Depending on the way it's setup, if the air is being released after it has already passed the MAF then it will result in a rich condition since the ECU is assuming the air is entering the engine rather than being vented to the atmosphere (such as during shifts).
This is ofcourse assuming the stock Bosch bypass valve is located after the MAF and the air is recirculated after the MAF as well. You don't want to recirculate it before the MAF or it will meter air that has already been metered. With the way Stillen routed the charge piping and installed the MAF sensors, I'm assuming the bypass valve is installed on the charge pipe and the air is being vented into the intake piping right after the MAF's and before the SC.
With that being said, you may be able to use a Forge Splitter, which is a bypass valve and a BOV in 1, it allows some air to recirculate and some vent into the atmosphere for the sound. It's adjustable too.
Forge Motorsport | Alloy Fabrication
Anyone has picture of the stock valve installed?
This is ofcourse assuming the stock Bosch bypass valve is located after the MAF and the air is recirculated after the MAF as well. You don't want to recirculate it before the MAF or it will meter air that has already been metered. With the way Stillen routed the charge piping and installed the MAF sensors, I'm assuming the bypass valve is installed on the charge pipe and the air is being vented into the intake piping right after the MAF's and before the SC.
With that being said, you may be able to use a Forge Splitter, which is a bypass valve and a BOV in 1, it allows some air to recirculate and some vent into the atmosphere for the sound. It's adjustable too.
Forge Motorsport | Alloy Fabrication
Anyone has picture of the stock valve installed?