**Riss Racing** 3 inch CATTED downpipes (Prototype)

[vivid]

Originally Posted by anthony@rissracing

This would be true if the pipe was all one size. Such as 3 inch all the way. However since we have to taper the pipe from 3 - 2.75 - 2.5 You have to weld the mandrel bent sections togeather to make it fit stock/aftermarket exhaust at 2.5. We could do a full 3 inch, and an abrupt taper at the end. However, a slow taper improves preformance. We worked for 7 months making a perfect flowing DP with input from tuners such and Vishnu and many others. These DPs are full 304 stainless steel flange to flange and have the highest HP/TQ reading of any DP with a tune.

Can you please post two pictures then showing:

1. the interior welds.

2. a picture of the exterior of the downpipe with arrows showing the diameter of each section showing the tapering down from 3" to 2.5"

[Riss Racing]

PMs replied, and orders shipped. Thanks!

[vivid]

Originally Posted by anthony@rissracing

PMs replied, and orders shipped. Thanks!

pictures where not received, any way you can take them or is there something to hide?

[Riss Racing]

Originally Posted by Vivid

pictures where not received, any way you can take them or is there something to hide?

Something to hide? I already answered your questions. There are pics all over the place of the DPs. We already told you that they are mandrel bent sections put togeather to preform the taper of the DP to fit stock. Also I can't take pics of the Catted DP because that is a PROTOTYPE and it currently being produced. As soon as they are done I'll take pics of whatever angle you want. As a matter of fact you can hold the DP and I'll snap the pics. Thanks!

[vivid]

Originally Posted by anthony@rissracing

Something to hide? I already answered your questions. There are pics all over the place of the DPs. We already told you that they are mandrel bent sections put togeather to preform the taper of the DP to fit stock. Also I can't take pics of the Catted DP because that is a PROTOTYPE and it currently being produced. As soon as they are done I'll take pics of whatever angle you want. As a matter of fact you can hold the DP and I'll snap the pics. Thanks!

I eagerly await those pictures of the welds. You could take picture of the cattless welds as I am sure the same shop is making them for you. Please link to ANY picture that shows your interior welds on this web site or any web site, cause I could not find any...

Also I can't find a diagram that shows how you taper down the width of the pipe, if there is already such a pic/diagram please provide the link if not could you provide us with one?

If the offer of holding the pipes while you take picture means that you are planning a trip to Atlanta then please let me know. I would very much like to see the pipes in person.

[TunedM2C]

This might help.

[vivid]

Tuned great pics they show off the welds well, thanks.

[Adam@Riss Racing]

Stock/catless and CATTED dynos will be done Monday at 10am. Stay tuned!

[TunedM2C]

Looking forward to the catted!

[Riss Racing]

Originally Posted by Tuned1

Looking forward to the catted!

Dynos will be up tomorrow!

[Nice1]

any dynos yet?

[Adam@Riss Racing]

Originally Posted by Nice1

any dynos yet?

Morning. We didn't get enough miles on the car. We put a lot on today and will have them posted tomorrow. We will try to have Vishnu V3 w/ Catless dynos tomorrow as well. Will keep you posted

[JohnnyTT]

Originally Posted by Adam@Riss Racing

Morning. We didn't get enough miles on the car. We put a lot on today and will have them posted tomorrow. We will try to have Vishnu V3 w/ Catless dynos tomorrow as well. Will keep you posted

Will you have Dynos of just stock with the catted DP's? No other mods.

Thanks.

[Riss Racing]

Originally Posted by JohnnyTT

Will you have Dynos of just stock with the catted DP's? No other mods.

Thanks.

This dyno will be up today. Bone stock with catted over, had to put miles on the car before we did the dyno.

[Riss Racing]

Well good news bad news.....Did the baseline dyno and got 281whp bone stock. While putting miles on the car get all the way to the dyno strap it up and my fuel pump goes out. We now need a test car so we can put the catted DP on them. Please PM me or email me anthony@rissracing.com if your available. Thanks!

[Charles1]

PM sent

[Riss Racing]

Originally Posted by Charles1

PM sent

Got it will be in contact tomorrow. Thanks!

[JohnnyTT]

How we looking??

[ki__]

Any sounds of it on 135i?

[Riss Racing]

Originally Posted by BlacknRedi

Any sounds of it on 135i?

Need a 135 for soundclips....anybody here in So Cal available? If so PM me. Thanks!

[TunedM2C]

Dyno?

[Adam@Riss Racing]

Originally Posted by Tuned1

Dyno?

No Dynos while Anthony's car is in for service for the FP problem. We are actually just finishing production first and will get dyno results after. You will definitely see a good gain. We will try to get these out to a 1'er after we get all our production pieces for video/soundclips and all. Also, for those 1'ers that have our Catless, anybody willing to post a video for us? I'm sure this community would love to hear/see it!