When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I'd be interested in the cooler parts. Car looks great! I don't see the packages on your website for the 987.2. Are they on there?
Please send us an e-mail. Sales@verus-engineering.com. We can discuss the packages, I do not believe we have got them on our website yet.
Originally Posted by higlesias
you guys are doing a great job!
what i don't get is, how you've come this far and still haven't had the requirement to wire in a PSM disable.
I'm subscribed to this thread solely awaiting for this. And hoping that when you do it, you'll make a nice step by step so i can mimic it, lol.
Thank you!
We have not found the PSM invasive to our tracking and testing yet. I'm not sure if we are not driving the car hard enough or the car is composed enough for PSM to not become a hindrance (I've only had it interfere during the rain or when I really mess up lol). Maybe you can message me, or type it here, on what is going on with your car and what the PSM is doing?
We have not found the PSM invasive to our tracking and testing yet. I'm not sure if we are not driving the car hard enough or the car is composed enough for PSM to not become a hindrance (I've only had it interfere during the rain or when I really mess up lol). Maybe you can message me, or type it here, on what is going on with your car and what the PSM is doing?
Eric I've found the PSM to relatively invasive once I got to the point I consider running the ragged edge of what the car can do. It has been most prevalent in slowing me down on corner exit, though I believe some of this can be contributed to the diff. Even with the button turned off it is still working in the background and cooks the rear brakes. In the manual trans cars it is relatively easy to put a toggle switch in the line to deactivate the PSM completely, however this can't be done on the PDK cars as I believe the yaw sensors used to control PDK shifting are part of that circuit. Whether or not someone reaches the level where something like this is necessary is very subjective, but it is a common mod on our cars.
Best regards,
John Gaydos
__________________ SOUL PERFORMANCE PRODUCTS Quality Exhaust Solutions, Fair Pricing, and Outstanding Service
John Gaydos- Owner, Performance Specialist
Cell - (484) 883-6197 johng@soulpp.com
Eric I've found the PSM to relatively invasive once I got to the point I consider running the ragged edge of what the car can do. It has been most prevalent in slowing me down on corner exit, though I believe some of this can be contributed to the diff. Even with the button turned off it is still working in the background and cooks the rear brakes. In the manual trans cars it is relatively easy to put a toggle switch in the line to deactivate the PSM completely, however this can't be done on the PDK cars as I believe the yaw sensors used to control PDK shifting are part of that circuit. Whether or not someone reaches the level where something like this is necessary is very subjective, but it is a common mod on our cars.
Best regards,
John Gaydos
Agreed here. PSM definitely interfering on corner exit (PDK car with open diff) and I cooked the rears once. Been looking for a stock lsd case ever since
Agreed here. PSM definitely interfering on corner exit (PDK car with open diff) and I cooked the rears once. Been looking for a stock lsd case ever since
Originally Posted by Soul Performance
Eric I've found the PSM to relatively invasive once I got to the point I consider running the ragged edge of what the car can do. It has been most prevalent in slowing me down on corner exit, though I believe some of this can be contributed to the diff. Even with the button turned off it is still working in the background and cooks the rear brakes. In the manual trans cars it is relatively easy to put a toggle switch in the line to deactivate the PSM completely, however this can't be done on the PDK cars as I believe the yaw sensors used to control PDK shifting are part of that circuit. Whether or not someone reaches the level where something like this is necessary is very subjective, but it is a common mod on our cars.
Best regards,
John Gaydos
Thanks for the info. I can honestly say we have not had an issue so far with PSM butting in except in the rain.
A few thoughts on why we may not have had an issue yet:
1) We've always gone out with our aero kit on the car. At 70-80MPH, which is what most of Putnam Park's corner speeds are, minus the one hairpin, the rear is producing in the vicinity of 400+lbs of downforce. Perhaps this is enough to keep the rear end happy during corner exit?
2) We may have enough tire to keep the car from spinning the rear wheels during corner exit.
3) Combo of above.
4) I'm just not pushing it hard enough (quite possible).
We have plans to do some back to back testing this year with a professional driver in the seat. Maybe this will shed some more light and we'll look into a fix.
Thanks for the info. I can honestly say we have not had an issue so far with PSM butting in except in the rain.
A few thoughts on why we may not have had an issue yet:
1) We've always gone out with our aero kit on the car. At 70-80MPH, which is what most of Putnam Park's corner speeds are, minus the one hairpin, the rear is producing in the vicinity of 400+lbs of downforce. Perhaps this is enough to keep the rear end happy during corner exit?
2) We may have enough tire to keep the car from spinning the rear wheels during corner exit.
3) Combo of above.
4) I'm just not pushing it hard enough (quite possible).
We have plans to do some back to back testing this year with a professional driver in the seat. Maybe this will shed some more light and we'll look into a fix.
Good point, you do have a significant aero advantage
Good point, you do have a significant aero advantage
Originally Posted by gman3280
I have a pdk with the factory LSD upgraded to an OS Gikken LSD. I leave the car in sport plus and the PSM comes on maybe once a weekend. Not an issue.
Originally Posted by monochrom3
Yep LSD cars are a different story. I've been looking for an LSD to swap out my open diff
I'll let you guys know if we see a major issue when we do some back-to-back testing (no aero/aero) type of testing. I'm going to assume we will see PSM jump in quite a bit more than we have in the past without the aero. I do not believe we have a factory LSD either.
Another possibility that I was thinking about while at the track this weekend; I ride motorcycles quite a bit and really enjoy tracking them. As a result, I am naturally very fluid with applying throttle during corner exit. Matting the gas on a bike during corner exit is a surefire way of laying down a bike. Just another potential reason we have not seen an issue yet and others have.
Wheel/Tire Issues:
I am very happy to report the issues are gone with (2) new Cup 2s on the front wheels. Car tracks straight as can be, absolutely no vibration in the steering wheel *finally*. I have been dealing with this for 4-5 months now, I am so glad to be over with it, for now, I hope forever.
I am working on getting some more data from AIM from our testing sessions. We have been really busy with other projects but we definitely aren't done going through the data. We'll be back on track this weekend as well to see if we can improve our times further with some damper adjustments and wing adjustments.
Rear Wing:
We have received quite a few e-mails asking about the rear wing, for both GT4 and 987. The main concern is that the rear wing is wider than the car, which ultimately boils down to the perspective of the image taken. I have added some images below. The wing is large; but not wider than the car.
1800mm Wide Verus Wing Rear 1800mm Wide Verus Wing Front
That being said, we will work on getting our PCA spec rear wing (follows PCA rules as far as location, size, width, etc) on the car and have some photos taken. We may do some testing with it as well to see if we can see a difference on the track. We will have to run more wing angle to achieve the same downforce, but it may run similar times. It should be an interesting back-to-back test for us internally. Below are some images I took in the shop of the PCA spec on top of the 1800mm wide unit.
PCA on top of 1800mm Wide Unit, Front PCA on top of 1800mm Wide Unit, Front2 PCA on top of 1800mm Wide Unit, Rear
We have also performed the analysis on this rear wing to ensure it did not adversely affect the wing's performance.
PCA Spec Side View, Streamlines PCA Spec Top View, Streamlines PCA Spec Endplate Streamlines
Last edited by Verus-Eric; 10-02-2019 at 11:51 AM.
Reason: Added Images
We hit the track again this weekend to work out some of the kinks with the new suspension. The car is feeling better on track with changes in damping settings; our lap times have not decreased much but are more consistently in the 19's. This was with the PCA spec rear wing, so perhaps with the slightly more efficient 1800mm rear wing, we would be able to get into the 18's with me driving. We'll have some more testing later this month that should be really neat.
Below are some photos of the PCA spec rear wing on our very dirty car. She needs a wash for sure.
PCA Straight On PCA, 3/4 View PCA, 3/4 View, 2 PCA (Mounted) vs. 1800mm (Held On By Clay)
Could you post some pictures showing closeups of the duckbill and how it mounts over the hatch and the hatch operation? One of my concerns with choosing a wing is that I still want to be able to use the car on the street and so I either need a wing that is much much smaller and less beneficial but can be mounted 24/7 (eg the R wing) or I need something that I can remove the wing when not at the track and still have the mount not look like an ugly wart.
Could you post some pictures showing closeups of the duckbill and how it mounts over the hatch and the hatch operation? One of my concerns with choosing a wing is that I still want to be able to use the car on the street and so I either need a wing that is much much smaller and less beneficial but can be mounted 24/7 (eg the R wing) or I need something that I can remove the wing when not at the track and still have the mount not look like an ugly wart.
Of course. Below are some images; let me know if this does not fully answer your questions but I believe it will.
Bottom Side of Trunk, Rubber Covers Installed Bolt and Washer which Bolts the Spoiler to the Trunk Carbon Spoiler on Trunk, Foam Seal to Reduce Anything Getting Under Spoiler Uprights Bolted to Spoiler No Uprights Bolted to Spoiler
We were able to do some back to back to back to back testing with the Porsche today; so I was fortunate enough to drive the car without aero on it for the first time. I can understand what the PSM guys are talking about now. The rear wing was definitely improving the grip of the rear tires to the point the car was not as lively in the rear and the PSM was not significantly intrusive. Without the rear wing; PSM kicked in considerably more often and was intrusive.
We will hopefully have some videos and data to share in the coming weeks. It was an eye-opening experience and a lot of fun.
As a PCA Club, NASA GTS and former ITC racer, I'm enjoying this thread...I've had my 987.1S OOS since late 2013 and have since installed a 2011 Cayman R drivetrain (987.2 9A1 Engine/PDK w/stock LSD) I've already tracked a client's 987.1S with same conversion earlier this year and didn't have any issues...but have the diff. cooler setup pieces in the shop.
I'd be interested in trying out your full AERO package with PCA approved wing, diffuser, side skirts, etc. at some point but will get both of these cars dialed in with the ITC aero they both have.
As a PCA Club, NASA GTS and former ITC racer, I'm enjoying this thread...I've had my 987.1S OOS since late 2013 and have since installed a 2011 Cayman R drivetrain (987.2 9A1 Engine/PDK w/stock LSD) I've already tracked a client's 987.1S with same conversion earlier this year and didn't have any issues...but have the diff. cooler setup pieces in the shop.
I'd be interested in trying out your full AERO package with PCA approved wing, diffuser, side skirts, etc. at some point but will get both of these cars dialed in with the ITC aero they both have.
Thanks for the kind words. We are having a lot of fun learning the car and about our aero on track with what has been a fairly reliable car to date! Once we got that gear cooler on the car we have not had an issue staying on track for 15-20 minute stints, even with a professional (Ex IndyCar/Champ Car) driver! The car is a blast to drive and turns heads on the street and track for sure.
I apologize for the lack of updates/data; which we do have quite a bit of, but we have been busy on other projects. We were able to shave another half a second off the car with suspension setup tweaks (reduced ride height to increase front downforce/rake).
We are having a Black Friday through Cyber Monday sale on our Porsche products. The coupon code is PCar10 during checkout. Please e-mail us with any questions, sales@verus-engineering.com, as we will not be in the office again until Monday. Have a great Thanksgiving!
09-26-2019, 09:58 PM
