The CEL that i had was due to a bad CAT. It took a long time to figure out what was causing the light to come. It only came on every once in awhile. The dealer of course blame S/C. When ever i took it to TPC it would not come on. So i finally pulled the trigger on CATs and no more CEL. After taking them off i could see where something must have hit one of them from under the car. And there was a slight crack or hole at the top of the crack.

 

^ rover ron, how many kms/miles have u put on ur kit? numbers? reliability? problems? i am curious? feel free to pm if you dont want to post on the public thread

 

Please post it here. I am very interested in your experience as well.

 

oh man the car worked SO AWESOME on the rally. Pics to be posted with story on www.vrsm.vividracing.com as well as www.vividforums.com later today.

 

Dan congradulations on your new TPC equipped car...I expected nothing less from the BEST. And I'm not surprised at all by the 140 RWHP you picked up with their kit. As I had already mentioned prior to this thread months ago...I've seen 3.6L 996's with my own eyes putting down 430+RWHP with their kit. (with nearly 390-RW FT-LBS Torque to boot**) This is GT2 TT crushing acceleration on a lightweight C2 coupe my friends.
When you get around to it, post some dyno's or acceleration times Dan..would love to see them :-) Awesome ride!


--- Kevin

 

Been slammed here, will get it back on the dyno for some new results. Its over 100 degrees here! But we will do it for you!

 

I see you no longer carry the Evo centrifugal supercharger at vivid racing. I am considdering adding a supercharger to my already hopped up track car (996) and was wondering why you quit carrying the Evo? I see Evo posted some pretty impressive performance numbers with their centrifugal supercharger and have seen even better number from guys who have added cat bypass and headers to their evo mix. Evo guys say that TPC's extra fuel injector spaying gas into the throttle body is stupid and prone to set cars on fire. TPC guys say that a centrifugal supercharger has no *****, but won't post numbers to back up their own system. I personally would prefer a lot of low end torque for fun burnouts, but in reality, on the track, I just need something that won't blow up and I, like most track drivers, tend to keep the car in its powerband which is quite high up the rev range on the 996 anyhow so maybe the centrifugal would be best. Anyhow I am interested to hear from anyone who has raced and especially to hear why vivid dropped the evo product? Thanks to all.

 

If you track the car the CF evo unit won't be night and day like it potentially would on the street(assuming your staying about 5k RPM)

A CF blower is linear with engine speed where as a roots blower is not.

A roots blower is ALWAYS more efficient than a centrifugal when you disregard tuning and design.

In this case, Evo has shown to have a superior tuning option offering larger injectors and reprogrammed ECU. This is preferred but not always better.

The 2 companies are going to sling mud at each other but in my eyes it comes down to if you can stand the noise difference between the 2.

For a car that's driven on the street the roots blower is by far a better option.

People have run extra injector and piggyback setups for years. If it is optomized right you aren't going yo KILL the engine. Sure the other method is better but if the setup is done right it works. You can get differences in lean and richness is various cylinders from different cylinder positions on the fuel rail too.

 

I have had the TPC roots system since May. I have the Unichip and the power combined with the increased horsepower is incredible. It runs a bit smoother and is so linear throughout the power band that you hardly know it is there. It is a bit louder than the Vortech based product but it is a very different and more powerful end result. I put down 412rwhp and 383lbs of torque. My experience with the Vortech is on a 2000 BMW M roadster and although the car is insanely fast, it builds boost with rpm ramp up and does not come close to the low end power of the TPC. If you are remotelly considering the expense, spend the couple of extra bucks and give the TPC a shot. Anyone in the DFW area is very welcome to shoot me a PM and come for a ride if the are seriously evaluating this purchase.

 

Piggy back ECU, 7th injector, roots style blower? Is it a mustang or a porsche?

The TPC kit is a 1000x louder than the EVO blower. I would have to keep a bottle of advil in my car with a roots blower

I don't find the lack or lower end HP/Tq compared to the roots style as an issue at all. If you're getting on it, you're shifting at redline and dropping right back to 5K and doing it all over again. Right in the sweet spot whereas the TPC is running out of steam up top.

Not to mention TPC has no dealer network so to speak, so the chances of getting someone experienced in the installation and maintenance of those kits is slim to none.

On a positive note, the air filter placement of the TPC is much easier to get at than the EVO.

I can't go into specifics, but they have had problems with those kits.

I can't back this up with any technical knowledge, but it would seem as though the EVO would be easier on your engine as well, being that you're not really building any additional power until you're WOT at high rpm's. The roots seems to be putting extra load on the motor at all rpm's. I have driven my car for hours at a time and when driven easy, never even seen positive manifold pressure on my boost gauge using the peak hold feature.

As far as why Vivid doesn't carry EVO anymore, I'll let Dan explain that....

I would only consider the TPC if you lived down the street from them and the ability to camp on their doorstep if you had a problem

 

That being said, your car does look bad *** Low Stro.

 

If you are one who likes to drive a car hard as it should be...always in the top 30% of the rpm range, a centrifuge will provide you better performance. I have yet to find a Porsche with a roots blower that will get to 120 mph before my centrifuged compressor powered 996 will. The centrifuge will maintain the more linear power band of your Porsche. The power band of the roots blower flattens out in the upper rpm range, resulting in substantial performance loss compared to the centrifuge compressor running the same boot.

Go for the real world performance and not the dyno hype.

 

deputy,

Thanks for the prop on the car but I have to disagree with you. There is no reason to need a place to camp. The roots style is far more reliable and consistent than the centrifugal. Your thinking is good but you are wrong on the aspect of positive pressure during normal driving. I use mine as a DD and can going any where without getting into boost. One of the reason that TPC built their SC system around the roots and, stated by them also to be the reason they won the Rolex 24, was the fact that the roots is about the only platform that you can guarantee this much stability and consistency. They require no maintenance at all. The TPC kit is louder for sure. Sounds bad *** like a set a cut gears on a cup car.

Porsche911:

You sir have a challenge. I have way too much experience with both SC's to let you off on that post. The upper 30% a centrifgal is still building to peak. Below that 30% is huge value whether be it on the street and especially on the track. I will gladly give you a run to 120. I walk TT's and everything else all day long. I grew up in Lake Forest and am in Chicago three to four times a year. 75% of the time, I drive it just to get some time away on the road so you can bet that I will shoot you a PM when I am headed there in April. There is no dyno hype at all. I have let PCA instructor's and a very few talented drivers take it for a spin and I promise you, you are way off or dealing with a poorly managed car. If I can get into full boost 1-2.5 seconds before you, what in the world makes you think that my instant hp will be a loss to your boost building power. Do the math, its why TPC kicked everyone's *** at Daytona.

Don't forget about the price difference either. TPC has a complete after cooler system with there kit. It is a huge difference in cooling and intake temps. I have ran three different systems about four different ways in this design far outweighs the competition. the centrifugal will heat soak like a dog as well.

Anytime you want to lose a quick 500.00, let me know. Do may a favor though, you will have to give me the cash before the race. I wouldn't want to spend the time having to turn around a come back to collect my moola.

Merry Christmas.

 

A bit of holiday reading for you from TPC's site:

Why Settle For Less? Own the Most Advanced 996 Supercharger Kit

Experience the thrill of a Twin Turbo with no lag and at a fraction of the cost! At the heart of it all is the efficient and powerful Eaton, positive displacement Supercharger.

The TPC Racing 996 Supercharger Kit features 40% more bolt-on horsepower over stock. The 996 Supercharger Kit utilizes the Eaton, M90 positive displacement supercharger. This unit is similar design implemented by Jaguar,Mercedes-Benz, Ford, and many other OEM's.
Why a positive displacement supercharger?
Power, Reliability, and Easy Maintenance have made the Positive Displacement Superchargers the primary choice of every OEM manufacturer producing supercharged vehicles from Mercedes to Ford. A positive displacement supercharger provides lag-free performance at lower boost without the need for internal engine modifications. The end result, an affordable, reliable, high-yield, performance upgrade available for those seeking high-performance and every-day driveability.

Why share Oil?
Unlike the cheaper centrifugal style superchargers, the Positive Displacement Superchargers are completely self-contained and have their own synthetic oil supply. The TPC 996 Supercharger Kit features a bolt-on design which does not require internal engine or major chassis modifications. The 996 Supercharger Kit also includes a large liquid-to-air intercooler to keep your charge air temperatures cool in the relentless summer heat.

 

They are both great kits... if you super impose the power curve between the two blower, evos power curve is a perfect match compared to the stocks power curve. This is the main reason I went with evos' kit...its very predictable.