Guys, I have not been this excited since PROcede came out and I am more than excited to share this information with you.
For the passed month I have been working with Riss Racing to help Develop products for the 335. (been droping hints all over the forum, but didnt want to release anything yet)
The first idea that came to mind (well a lot came to mind) was to develope downpipes. We all know how restrictive the stock downpipes are having 2 huge cats on them as well as the small piping and crushed bends restricting exhaust flow! This I'm sure you all know that stock downpipes restrict our turbos and cause a lot of back pressure...etc
The passed couple weeks have been crazy spending night and day fabricating the downpipes for the 335, taking them off and on, off and on to make sure fitment is perfect!
As of now there is only one company to offer downpipes for the 335 and they currently sell them for 2800 dollars. Our idea was to make a product that is going to make more power and be cheaper to all BMW enthusiasts! I mean just because we have a BMW doesn't mean we should pay ridiculous prices!
We have Successfully Developed a perfect Prototype and it is ready for Mass Production.
Specs:
-Catless... These Downpipes REMOVE FACTORY CATS
-304 Stainless Steal
-Complete Mandrel Bend piping throughout downpipe
-3inch diameter Piping which tappers to 2.75inch at the end and has machined welded 2.5 universal flange to bolt to the stock/aftermarket exhaust systems.
-3 inch machined welded laser cut flanges to bolt to stock turbo and utilize stock band.
-Machine welded 02 sensor bungs for both pre and post 02 sensors
-3rd machine welded 02 sensor bung for anyone that would like to run a wide band...there is a bolt that plugs this if you do not want to use the 3rd bung.
Answers to questions that I know will come up... That I can help with
Is there a Check Engine Light?.... NO! Weeks of testing and no check engine light, both with and without PROcede.
Does 3 inch fit? Yes, we have successfully made 3 inches fit with no rubbing, touching, etc. Clearance is perfect, and to be honest there is more room now than there was with stock (having their bends and cats)! Also keep in mind at the end of the downpipe they tapper to 2.75 inches for perfect fitment to stock exhaust system
And the Real Question!!!
HOW MUCH POWER DO THEY MAKE OVER STOCK!?? Well this is the exciting part!
Here are all the Details on Before and After Dyno with just our first set prototype downpipes.
STOCK car STOCK DOWNPIPES secondary cats removed.
I DYNO my car STOCK with ZERO modifications on a DYNOJET.
Run Conditions: 69.9F Humidity: 42%
SAE with 1.0 CF and smoothing 5
76 pump gas
Max Power: 269.74 WHP
Max Torque: 279.33WTQ
Do not mind the PROcede DYNO over the stock graph!
STOCK car with Riss Racing 3inch Downpipes and NO PROCEDE on DYNOJET... We wanted to show true gains over stock!
Run Conditions: 89.4F Humidity: 26%
SAE with 1.0 CF and smoothing 5
76 pump gas
Max Power: 296.94- 26.7 Wheel HP increase OVER STOCK!
Max Torque: PEAK 328.68- 49.3 Wheel TQ increase OVER STOCK!
Again this is without PROcede or any other "chip".
We have 3 graphs to show everyone so there is no skepticism on it being SAE, STD, or uncorrected. WE are going to post all three so there is no controversy on the numbers being inflated...but for now to let you know STD was 304.05whp and 336.54wtq... and Uncorrected was 297.89whp and 329.72wtq.
Here is the STD graph
Here is uncorrected graph
We saw consistently 296whp SAE on all pulls and TQ started to drop a bit when car was getting heat soaked and hotter.
We Video Taped Every DYNO pull and showed the computer after the pull to show numbers and it being SAE, STD, and uncorrected... as well as showing the car with NO procede.... you'll actually see me holding PROcede in my hand in front of the camera after the pulls
IT would be great if Shiv can develope a map to really take advantage of these downpipes and make more power!! Shiv let us know what you think?
They will be posting the DYNO Graphs,Pictures and Videos ASAP as well as releasing information on time frame and Pricing (OK, I cant resist, they are being released very soon and for damn cheap!!)... I'm sorry I can not post them, They are going to post those themselves as they are new to the FORUM and want to show everyone what they are capable of offering the BMW Community for reasonable prices!
Remember these Gains are just with the Prototype and with the production piece we should see a bit better flow which might potentially make more power! We will know soon when the first batch comes
Enjoy, and please feel free to ask any questions or post comments!