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Go Back   TDIClub Forums > VW TDI Discussion Areas > Upgrades (non TDI Engine related)

Upgrades (non TDI Engine related) The place of handling, lighting and other upgrades that do not relate to the performance or economy of the TDI engine. In other words upgrades to your TDI that don't fit into TDI Fuel Economy & TDI Engine Enhancements.Please note the Performance Disclaimer

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Old June 10th, 2014, 06:52   #226
lucien2
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couldn't have said it better myself. Tires, tires, tires. Then the rest. I ran the last of the tread off the Goodyear Eagles that came with the wheels from the PO, and they were a huge improvement over the stock touring rubber. And then I put on Continental Extreme Contact DW Summer tires, and THAT was a huge improvement over the Eagles. It isn't sexy, like you make your first stoplight turn and go "oh wow, check that out!" But hit your favorite cloverleaf and the ultimate grip of the car is obviously far ahead of where it was before.

I'll tell you something, at the track this car, bone stock but for the 18"s and good tires, surprised people. Both instructors for the day commented on it. It certainly had more grip than I was qualified to fully exploit. Yes it was a little slow out of low speed exits, but that's my fault for all my novice early apex moments. It's a momentum car, not a drag car. Having said that, among other novices in "better" and "faster" cars, this Golf was all heart, and got around cars that should have stomped it. Again, not because it's faster....my point is, even a Golf TDi has formidable capabilities few of us are trained well enough to exploit. I sucked as a novice, but I sucked a little less than the others, with the result that the TDI was "faster" that day than a 911, whose owner quickly learned to be terrified of his gas pedal, a Trans Am that couldn't turn to save its life, and a BRZ, which also had major problems getting power down on a slightly wet track through its dinky Prius tires.

So ya....I'm spending my money on track time for now. Maybe if I qualify for solo runs I'll begin thinking about mods agains. ;-)
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Old July 16th, 2014, 07:58   #227
scrambld
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Can anyone more knowledgeable in this area offer suggestions?

I have a '06 Jetta TDI/5spd (195K) and looking to get some suggestions for a sportier handling suspension ie: less body roll. Others drive my car occasionally so I don't want to make it a handling nightmare.

I have just (recently) installed a Passat RSB (21.7 x 3.6), a set of Koni STR-T, GLI front/rear brakes, and 235/45/17. I would have liked to go with some springs but, most aftermarket springs I see lower the car....probably more than I am comfortable with.....no skid plate and plenty of road hazards (truck tire chunks, firewood, ice chunks...etc). I was looking for a set of TDI Cup car springs since those were for a Jetta TDI/manual trans (only about 3/4-1" drop)....and I wasn't sure how GLI springs would be on a TDI.

ACTUALLY, the front of the car is about right...height wise. The rear seems like it could come down an inch and look good...kind of has the nose down attitude. And I am sure if I did rear springs ONLY off of ?? I would completely upset the characteristics of the car? Also, I am thinking I could have gone a little bigger on the RSB or at least to a solid bar...while leaving the front alone....does that seem correct?

So, suggestions on sway bar(s). Anyone have any feedback on a particular setup? Springs, or at least addressing the rear? Any other advice would be appreciated. Thanks in advance!

(Yes, I cut this from my post in "Upgrades"..as there was no action there and this seemed like the more "correct" place..?)
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Old July 16th, 2014, 08:52   #228
IndigoBlueWagon
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You really in Conway? My son lives in Montague, his gf is from Conway.

Regarding your car, I don't know how much of bump in size the Passat RSB is over stock, you may want to go with a firmer one. And rear springs are a challenge as they have to accommodate a wide variation in load. You could go with GLI springs but if the condition of my son's TDI's belly pan is any indication, lower is not a good idea.

I'd shop for a larger rear bar (26 or 28mm) and leave the rest of the setup alone. If the larger bar makes the car too prone to spinning in the snow then you could put on a larger front bar. But I'd try to avoid that. My '02 wagon with a Shine rear bar (very stiff) is fine in the snow as long as I have good snow tires on it. With all seasons it want's to spin.
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Old July 16th, 2014, 16:49   #229
scrambld
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Quote:
Originally Posted by IndigoBlueWagon View Post
You really in Conway? My son lives in Montague, his gf is from Conway.

Yes, Conway for 4 years so far......Wow, small world (sometimes). Night Kitchen (Montague) I've been to once....want to go back for a second venture.

Seems like very good advice with the larger rear bar. I believe my rear bar was a 18, 19, 20mm (unsure of wall thickness) depending on option (I never did look at the part #) so I can't confirm. Either way, it (the Passat RSB---22.7/3.6) doesn't seem to be enough of an upgrade to warrant any appreciable improvement (so maybe my bar was 20mm?). I will consider upping the RSB dia. and probably a solid bar at that. I know there is a formula to use when comparing roll stiffness between hollow bars vs. solid bars.

And yes, lowering I was not to interested in going that route.....running skid plateless....

Last edited by scrambld; January 15th, 2019 at 06:10. Reason: Bad spelling
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Old July 16th, 2014, 17:23   #230
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Aftermarket bars are 24, 26, and I think someone has a 28mm. I've looked at them for my Golf (same rear suspension) and had decided a 26mm is the way to go. Some are adjustable, so that would allow you to fine tune it and perhaps dial it back in winter.

My son lives across the river from the Book Mill. If you see a not pristine 2-door Golf there with a Grateful Dead/VW sticker on the hatch, that's him.
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Old July 16th, 2014, 18:10   #231
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Quote:
Originally Posted by IndigoBlueWagon View Post
Aftermarket bars are 24, 26, and I think someone has a 28mm. I've looked at them for my Golf (same rear suspension) and had decided a 26mm is the way to go. Some are adjustable, so that would allow you to fine tune it and perhaps dial it back in winter.

My son lives across the river from the Book Mill. If you see a not pristine 2-door Golf there with a Grateful Dead/VW sticker on the hatch, that's him.

HaHa...yes the book mill is in the same structure(?) as the Night Kitchen...been a couple years since being there. Book Mill is an interesting place. I'll have to put that on my growing bucket list....A list that I plan to attack next week.....

26MM solid and adj. sounds like a good plan. I actually haven't seen any....or considered a 28mm thinking it'd make the rear too loose (stiff). I too run dedicated snows in the winter so hopefully, even adjusted down, the rear won't be too loose.
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Old November 5th, 2014, 23:09   #232
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This is a great thread. Thank you very much for the informative posts.

I decided to put 225's on my car (Continental DWS Ultra High Performance All-Season) and that alone has made a huge difference. I went ahead and put ECS Tuning FSB and on the car. Nothing else has been changed in the suspension setup. The car is tighter, has less roll and I haven't had a front or rear end swing out on me in hard cornering.

I was chewing on putting coilovers on the car to lower it slightly (1"front and rear) but after reading this thread I may hold off on that. I think the next thing up will going to be some frame braces to see how that affects the steering and grip. Unibrace makes some for the MK6 TDI.
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Old November 9th, 2014, 14:57   #233
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With my '06 Jetta TDI (now sold), with otherwise-stock suspension, I found that an Eibach 23mm rear antiroll bar had to be set on "soft" in order to avoid being a bit on the tail-happy side. I think 26+mm rear antiroll bars would be too stiff (Note: Mk6 Golf has same rear suspension assembly as Mk5 Jetta but the calibration is probably different).

If you have different springs or dampers, or if you've changed the front antiroll bar, it is likely going to be a different story. With the stiffer rear bar only, ride quality was virtually indistinguishable from stock.
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Old November 11th, 2014, 07:10   #234
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I have a H&R 24mm RSB set on firm with Koni coilovers(set firm), 034 Motorsport front strut mounts, 17x8 wheels with 245-45 Continental DW tires, no oversteer at all. Next up is a Unibrace XB and I'm also debating the UB.

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Old November 19th, 2014, 15:45   #235
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I just read this whole thread, it's too bad that Celidh and Peter suddenly left in the middle of it. The one major thing that would help me out would be if someone happened to save the .gif's and other diagrams that are missing from their posts. If someone has these saved and can upload them to the site, or another host site that will be around long term, I will buy you a beer when we meet. It is a shame that they are no longer linked in with the text descriptions. Thanks in advance.
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Old November 22nd, 2014, 19:29   #236
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Quote:
Originally Posted by GoFaster View Post
With my '06 Jetta TDI (now sold), with otherwise-stock suspension, I found that an Eibach 23mm rear antiroll bar had to be set on "soft" in order to avoid being a bit on the tail-happy side. I think 26+mm rear antiroll bars would be too stiff (Note: Mk6 Golf has same rear suspension assembly as Mk5 Jetta but the calibration is probably different).

I haven't done anything yet, but was thinking about a Whiteline 24mm RSB only. Indigo suggested/used a 26mm RSB but maybe the wagon makes that difference.....meaning it will 'absorb' a larger RSB before mismatch happens.
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Old December 24th, 2014, 01:21   #237
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I just installed the Koni FSD Shine Racing Complete suspension kit from Kermatdi. For now, I haven't put the rear sway bar in, and have the front one disconnected.

I have only taken it out for a few drives so far.
First impressions:
WOW, feels great.
Car sits level.
Ride height nearly an inch taller than before.
Rear springs stay seated when jacked off the ground.
Not too harsh (AT ALL) on bumpy rutted gravel roads. Sucks up the big hits and not harsh with small bumps. I have another car set up for autox with stiff coilovers that will just squirm, yaw and try to remove your fillings at the same speed, on the same road.

Plenty of roll left in the suspension but it's now linear and controllable with no fsb, WAY less than stock. The stock suspension with fsb connected felt like the car wanted to do a barrel roll if I did an emergency lane change.

I read a post that described this setup like a sporty Cadillac, that is spot on. Soft and compliant when just driving along, but firm enough to take a set and support the car when you turn hard.

I will definitely be hooking up the fsb. Not convinced I want the rear one at this point, but will end up installing it to see the difference.

Way less brake dive.

Cheap way to totally transform the handling of your car.
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Old December 24th, 2014, 03:22   #238
IndigoBlueWagon
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Rear bar is the most important part of the kit, makes the biggest difference. Don't overlook it. And I don't think the Shine Real Street springs are strong enough to go without the front bar, especially with no rear bar.
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Old January 2nd, 2015, 08:58   #239
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For a DD, I think adding only stiffer front Sway Bars (or a matched set) are a decent option. They give the car a sportier feel under normal highway conditions and canyon driving. When you push past 8/10's of the cars grip level then the car will become an understeering plow monster, which is good for most drivers and is why all new cars understeer from the factory.
For track driving than I agree, the rear sway bar is epically important. The addition of a stiff rear sway bar will decrease traction to the rear and allow your trunk to get around corners in a hurry.

"Understeer is when you see the tree you are about to hit, if you only heard and felt the tree then it was oversteer.” -Walter Röhrl
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Old January 14th, 2015, 11:27   #240
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Quote:
Originally Posted by GoFaster View Post
With my '06 Jetta TDI (now sold), with otherwise-stock suspension, I found that an Eibach 23mm rear antiroll bar had to be set on "soft" in order to avoid being a bit on the tail-happy side. I think 26+mm rear antiroll bars would be too stiff (Note: Mk6 Golf has same rear suspension assembly as Mk5 Jetta but the calibration is probably different).

If you have different springs or dampers, or if you've changed the front antiroll bar, it is likely going to be a different story. With the stiffer rear bar only, ride quality was virtually indistinguishable from stock.

IIRC, that 26mm RSB was a hollow one, so most likely not having as much torsional resistance as a solid RSB.....depending on wall thickness of the tube?

I haven't done anything as of yet......it's still just a blip on my radar.
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