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Might this be a sign of brake booster issues? Could this be the vacuum leak or problem?
Here's the scenario:
While stopped (foot on brake), Tranny in Neutral or Drive, I raise the RPM to a steady 1000, minor hunting occurs. While still stepping on the brake, I increase rpm slowly above 1000 and the brake depresses further without me adding pressure on the pedal. Is this normal?
So my proper fuel pressure gauge finally arrived. I measured the fuel pressure and it looks like I was running 20psi below recommended pressure suggested by Kleemann for my setup.
The second I raised the pressure via the fuel pressure regulator, the idle instantly improved and what I thought was already smooth earlier was even smoother! I haven't driven it yet but I will in a few hours.
In the manual it says 55-57psi but that was a different fuel delivery system. With the setup that includes a second fuel pump which is what is used for the newer Supercharger setups, idle fuel pressure is supposed to be 75-80psi. I was at 58psi and the system didn't like it. The second I increased it, the idle smoothened. I didn't drive it yet and the ECU was still adjusting so there was still a little tiny hiccup. I will update as soon as I pick up the car in a bit.
If only I can figure out what is causing the little bit of hunting left.
Here's a clip right after I increased the pressure:
Sound great & soo smooth, should to ride it & let us know.....
ZAYED,,
Still not as smooth an idle as I'd like it to be. It should be smoother. I still suspect a vacuum leak somewhere.
I lessened the fuel pressure to 70psi and it is still ok with the slight hiccup.
It drives perfectly, power is great, shifting is like stock.
It's just this one last hunting issue that is bothering me.
Does anyone know if there is such a thing as adjusting the serpentine drive belt too tightly? Is there a proper tension for this? Would anybody know it?
Here are some clips after last night's "tinkering" session:
NOW it's done!!!!!! This is how it is supposed to run!
I will explain everything I had to do to resolve it. And yes, it was installer error (AGAIN), that I had to correct.
At least it's done and running perfectly!! The car starts up and sounds completely stock. The only time you know there's anything extra under the hood is when step on the throttle and hear the howl of the supercharger. The headers add a little bit of volume but not much.
"Don't crash it"'!!!!! I felt the same when my brother took my keys to my Klee car 1 yr ago lol!!!
Looks great.
Thanks!
haha! Yeah I read your write up about how you finally got to drive your car after Cory and the gang corrected all the install errors from the initial installer. I think your brother enjoyed the drive!
And now my other brother who has a 2009 G55k wants to do a K1 or K2 upgrade. He says he can't have mine be quicker than his.....
Last edited by BonitaBeast; Oct 22, 2012 at 10:01 PM.
Update:
The car is running better everyday. It feels stronger the more I drive it.
So here's the final story about how I got her up and running properly.
The of my issues were the rough idling issues, some misfiring at idling, and hunting at low RPMs which lead me to check the entire vacuum system.
My findings were no less than horrifying. I decided to check the 3 vacuum lines coming from the back of the supercharger. As I suspected, Connections to the MAP sensor and siwtchover valve were completely wrong. What I found was a T connector joining the MAP air hose to the switchover Valve airhose. This was hooked up to another T connector that again split into two and hooked up to the 2 vacuum barbs behind the supercharger. Aside from that, the hoses were run UNDER the supercharger so access was nearly impossible. Instructions said to run the lines along the side of the supercharger in between the fuel rail and the supercharger. I'm not sure how anyone can mess up such simple connections which were spelled out pretty clearly in the installation manual, but that's what I found.
I had remove the entire intake setup down to the throttle body for me to access the vacuum lines coming out from behind the supercharger and re-ran the lines using new hoses to the respective sensors.
After reinstalling the intake, I started her up and she idled perfectly!!!
Now the car is running perfectly and soooooo smoothly! At idle you can barely even tell there is a monster hiding under the hood. Once you stomp on the gas though, it's a completely different story!!
I think this whole project was a complete learning experience on all fronts! I would do it all again in a heartbeat after experiencing the outcome and the performance this package provides! It took a little longer than I would have liked but once again, at least it's now done and I can enjoy it!
Installed the Innovate Motorsports LC-1 and OT-2! Good stuff!!
......so the OT-2 connects to the iPhone via a wifi connection. Does it mean you can only use this on the go if you have mobile wifi set up in your car?
......so the OT-2 connects to the iPhone via a wifi connection. Does it mean you can only use this on the go if you have mobile wifi set up in your car?
Ted
The OT-2 also has serial and USB outputs for a more traditional interface to laptops. The more advanced features of the OT-2 are done via laptop connection.
I haven't really gotten to play around with it extensively but a cool feature I did try was the data playback using the logworks software. After recording diagnostic info on either the phone or laptop, you can playback the data and view it all on virtual gauges and graphs on the computer.
A few little things I installed for some piece of mind. Checking on the phone is all good and all but it's something you can't keep on the whole time without using up so much battery charge on the phone. I still use the phone for data gathering.
Here's a brief update. After inquiring with Kleemann about some possible additional upgrades after the headers and supercharger, I found that the pulley included with the kit was the 3.0" pulley. So I rang up Kleemann and ordered a smaller pulley. My boost went up from 5psi to a nice respectable 7.5psi and power increased noticeably through out the entire rev range.
3 inch pulley:
2.6 inch pulley:
AFRs are ok throughout the rev range at WOT as shown in this snapshot of data collected using some Innovate equipment (LC-1 and OT-2):
The truck has been running nice, strong, and smoothly for the past couple of weeks; especially since I changed the pulley to the smaller 2.6inch.
One year later............ The car is running amazingly! The Kleemann products are holding up perfectly to the heat and humidity here in the Philippines. I think the only thing I may consider getting is a larger heat exchanger(FTP) to take care of the heat soak generated while waiting in the horrible Manila traffic.
That's not to say I haven't had a few minor issues since my last hiccup in December of 2012. But at least I've been enjoying trouble free motoring for the better part of 9 months now.
Here's a short clip of a highway drive a few weeks back:
Three years later and the Kleemann Supercharger install is running as strong as ever. Issue free. Just been filling with gas, changing the oil/filter regularly and normal maintenance.
One item I did take care of was a minor adjustment I made to the Kleemann support pulley wheel sometime last year (2014). Here's a picture of the part I am referring to, newly installed.
I had to adjust the pulley outwards about 1mm so the belt fit completely flush on the pulley. Originally it was like this:
I added a 1mm shim behind the pulley which allowed the belt to sit flush. I noticed the belt starting to fray on the outer edge before I did this. That made me think about fitting the shim(I used a 1mm washer). Voila. Hoping for another few years of worry free motoring.
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, that means the minor hunting left may causes from air leak somewhere.....
