C32owner

Some more info on this mod would be highly appreciated, and reason/s for doing this mod?

drothgeb

More boost! The bypass valve is just a throttle body and does not seal... it's a boost leak. DTK said he welded his own shut and got saw almost 3PSI more.

E55amg0220

Would really like to hear some info on this are they for sale? If so how much, and does it throw a code not having the flap installed. Wish there was a way to just seal it

East Coast Euro

They are not currently for sale to anyone but testers. We don't like to release products until they are tested. You can tune for the bypass delete. The alternative to sealing it is welding your factory bypass shut. Although that is not reversible like our product.

C32owner

Wow 3psi more is huge. Like 40-45whp.... Now what is the negatives of this bypass delete?

C32owner

Any idea on timeframe for release pending no issues?

drothgeb

Yeah haha. I have no experience with it though, just what I've gathered from others. DTK wasn't selling or advertising anything he sells though when he told me that I was just trying to get info. Downside is fuel economy takes a dump. I couldn't get any numbers haha. ECE said they didnt want to speculate because there are too many factors and the guys that have done it would only tell me fuel economy goes down "alot" haha.

tw2

So benefits would be lower rpm for the supercharger to achieve the same boost which would mean lower IAT's as well and more consistent boost? 3psi is quite a lot, I can't imagine you would want anything other than stock pulley's?

drothgeb

If you blocked it off and switched to a bigger SC pulley so that you ended up with the overall same boost, yes.

For folks like myself and likely C32 living in the car racing cursed lands of altitude we will take anything we can get. I run 8 psi with a 72MM fixed right now (LTH and manifold crossovers keep it down a little lower also). But would definetly throw this sucker on to compliment my 72mm haha.

C32owner

Cool thanks. Hopefully some data from testing will be released

C32owner

For possibly the first time ever, guys install this and will be reversing their pulley setups to take away boost lol

C32owner

This will be a Godsend mod for us for sure ! Ah you got the crossover mod, was wondering why you had even lower than normal boost

drothgeb

Yeah I am pretty excited for it, I'll definetly try blocking it off at some point but I believe you need a clutched pulley when blocking off so I'll have to sort that out. If the price ends up being less than a used bypass valve off ebay plus a little bit of fab work for my shop to seal it up I'll get ECEs (ECE I hope you're listening ) Otherwise I'll definetly snag a used one, weld it, and give that a shot!

C32owner

Likewise, so tired of having low boost and as a result low power. This has the potential to be the next big thing !!! Super stoked, go ECE lol

E55amg0220

Well i am wondering what ya do so that you dont get a code for the bypass not being plugged in. I also am plagued with the high altitude blues and lower than normal boost.

whipplem104

The bypass valve is not a blow off valve. If you remove it it will not blow up your car. It also has nothing to do with the clutch being required. PD Supercharges did not have them at all until about maybe 20 years ago now. It was all over the superchargers websites that you would gain 1 mpg at cruise. When you lift off the gas pedal the throttle body closes and the engine and the supercharger can not get any air. There is no boost spike. This is totally different than a Centrifugal supercharger that pushes air against the throttle plate. Then when it closes you must dump the boost with a blow off valve or recirc valve. The clutch and the bypass is for idle noise and emissions.

East Coast Euro

Your tuner should be able to tune it. If not you can leave it plugged in and tuck it away.

drothgeb

Found some very old info on the subject browsing. What a surprise, whipplem104 was involved in the same discussion 10 years ago haha. Veteran for sure.

https://mbworld.org/forums/c32-amg-c...-actuator.html

I couldn't find where that boost graph came from but that is it shows just over 3 psi increase!

E55amg0220

Well i get 8.5 psi with a 76mm at 4500 ft above with longtubes no cats an full exhaust. Ill be installing a bypass valve plug and seeing what happens. I still have a clutched pulley so thats not a concern but i will be able to see if there is any benefit to it but ill love it if i even get up to 10psi or even better response as ive heard it also provides.

drothgeb

Awesome brotha, good luck. Who are you having tune for it?

E55amg0220

I have sent an email to race iq im sure tony can take care of it hes gone til the 16th so im waiting on one more part to get here before i do it so hopefully he will send me the new tune by then but if not ill just plug it in for now an tuck it out of the way.

C32owner

Please do keep us posted bud. I'm 1000ft higher up in the sky than you and could really do with the added boost too.

StarvingArtist

This makes me want to improve the seal in my bypass. Some seals on the shaft, maybe a rubber lip for the butterfly. A little added restriction shouldn't matter. That would be the best of both worlds. I have a spare to experiment with, unfortunately no time. Maybe next winter.

E55amg0220

Have no worries man ill definitely keep everyone in the loop. I have my bypass plug ready, all my gaskets are here, i am just waiting on some spacers to get here that ill install to help with heat and ill throw it all on later this week or this weekend.

C32owner

Excellent, goodluck with the job. This is gonna get interesting