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Discussion starter · #21 ·
I made a pill and had no change at all, I went from a wide open line to a line with a .020 pill in it. No change at all. I am leaning away from mechanical, but only in theory. I can force the car to snap to boost at any point in any gear at any RPM by just pedal position.

The tuner @ Whipple is back and has been in contact with me about getting this taken care of ASAP and correctly. The response has been more than gracious and I am now extremely confident that we will have a solution. I would rather work with them to get this taken care of, why, because it would help others in the future, and their supercharger really is a well engineered piece and the installation is super smooth.
 
Where are you grabbing your vacuum? Like I said, if your getting it from the intake you need to move it.

And your bypass valve is controlled by vacuum so it doesn't matter what gear you're in or what rpm... if you get hard into the throttle, it's going to close.
 
Discussion starter · #23 ·
The connection is to the intake manifold post Supercharger. Yes, after the supercharger. So, it must not run off vacuum, it must run off pressure?
 
The connection is to the intake manifold post Supercharger. Yes, after the supercharger. So, it must not run off vacuum, it must run off pressure?
Hook that hose to a nipple coming off the throttle body. You'll notice a night and day difference. Guaranteed.
 
Discussion starter · #26 ·
i have a magnuson also. are you sure your bypass valve ( what ever you want to call it ) is not bad and leaking? i know they go bad ( a rubber flap inside )

you can buy them from here
Jon Bond Performance, The Worlds Premier Supercharger Rebuilder and Parts Store

great guy to deal with.
It is possible, that is what the behavior is pointing too. However, I am working with Whipple on the solution. I have put that out there to see how they feel about it. It is really hard to tell from the drivers perspective if this is mechanical or tune? But, when we find the problem I am hopeful it may help others in the future.
 
Discussion starter · #28 ·
If you do a search you will find that there are many people here who have switched the line to the throttle body and come close to eliminating the issue. Some people swap it back at the track. Go try it and see.
I am game to try that. Might I ask where you are making the connection? My throttle body does not have any ports that I am aware of.
 
I am game to try that. Might I ask where you are making the connection? My throttle body does not have any ports that I am aware of.
Sorry, The ports I'm referring to are not actually on the throttle body but on the snout of the blower next to it. I'm not sure how the Whipple is configured but there must be a port on the snout somewhere pre-blower.
 
To me, it's a bit unsettling purchase a big ticket item and not have a compatible tune, well documented for the specific application. It's crazy that a package is really just a bunch of parts and not a complete package. I certainly hope that you get squared away. Please keep us posted.
 
Maggie has you run the bypass valve off of the blower snout because running it directly off the blower
lower manifold makes it a big "feisty"!
 
To me, it's a bit unsettling purchase a big ticket item and not have a compatible tune, well documented for the specific application. It's crazy that a package is really just a bunch of parts and not a complete package. I certainly hope that you get squared away. Please keep us posted.

It's not the "tune" it's the nature of the beast with positive displacement superchargers. If you think this
sounds bad, look at any old school Roots Blower (6-71, 8-71 etc) they don't have the luxury of a bypass
valve and as such they barely idle because of all the boost surge.

The only way to make these operate more smoothly would be to have a computer controlled progressive
setup for the boost valve (and it could be done, the factory setups use computer actuated setups).
 
To me, it's a bit unsettling purchase a big ticket item and not have a compatible tune, well documented for the specific application. It's crazy that a package is really just a bunch of parts and not a complete package. I certainly hope that you get squared away. Please keep us posted.

i would agree.. what i find funny is this isn't just superchargers.. alot of aftermarket stuff seams to be that way.

I called drive shaft shop.. I asked about a 1pc drive shaft. he says. we send shims incase you need to shim the transmission brace and the front part of the rear end? really. for 900.00 and i MAY have to shim some stuff to make a 1pc drive shaft work?

that is why more and more i lean to factory and leave it.. aftermarket is great. but the more to toy with.. the more headaches and money it will cost.. that i promise you.

now back to your regularly scheduled program.
 
My whipple on my 6.1 is a pleasure to drive. I'm forged, heads/cam, 14psi. Work was done at BFNY and tuned by A.J. I don't have Iight switch effect. I can feel the throttle when I get into a little boost, depending on track and prep I'll use little boost to get off the line before I hammer it. I enjoy driving an road trips in the car, it may get into a little boost going up a big hill but certainly no light switch.
 
Discussion starter · #36 ·
An update on progress. I have been having lots of back and forth with Whipple. I have been educated, explained to, apologized to, and told it will be taken care of. I have had multiple tune files along with detailed explanations of what is going on with the tunes and what adjustments have been made. I have had offers made that were more than gracious and to be honest, at this point I would fight for them. Yes, it started off rough, but we are making lots of progress. I am enjoying the process and the progress.

So, the short of it, is how my computer is adjusting for air once we get to 1 bar, or stoichiometry, or 1 atmosphere. Since I have a 2015+ SRT with all the performance pages all all that, there are more tables to contend with. Yes, there are canned tunes for the package and I would imagine most of the time they would work, I have a sneaky suspicion that it may have something to do with the SRT adjustablity and performance pages.

However, did I expect the canned first revision to work? Yes I did. Did I expect it to be perfect right out of the gate - no, only a dyno can do that, or someone that knows how to read data logs with a lot of back and forth. Anyone that installs a supercharger should be ready for back and forth with whomever does the tunes. If it is the manufacture or a 3rd party. If you don't want to deal with this you have 2 options: 1, don't get a supercharger or 2, take your car to a one stop shop and leave it with them until it is done - and make sure that shop has a dyno so Jennifer Garner can call you and ask "whats in your wallet?"

I would rather do the job myself and have the back and forth. Why, well folks... and education is never free!

On another note, I spent an hour or so under the hood cleaning up all the hoses and rounting things, adding zip ties etc. What do you think?
 

Attachments

Keep an eye on pcv hose on passenger side that goes into Whipple catch can. The Whipple can couldn't keep up under boost for me(14psi) and would pass oil into the snout and bottom tray of Whipple, and would pool up behind tb, you can open the butter fly on tb an look or check hose coming out of Whipple catch can into snout. I added a 2nd can coming off the pcv then to the Whipple can
 
Discussion starter · #40 ·
Glad you are making progress. Are you going to do some half covers,or just leaving them off?
Probably just leave them off. I have not really looked into remouting them back on the engine. But I would love to be able to put some MSD Coils on there. Yea, I know they dont do much more than stock but it would look *****en. But, they do not have a set for the 392 yet.
 
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