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Will the BPI Flow Stack fit my intake? Do you ship to my country?
How big is the BPI Flow Stack or Flow Stack Assembly? How much is shipping?
My intake does not fit your Flow Stack, can I use a reducer coupling? I placed my order. Now what?
Can I use my current filter with the BPI Flow Stack? How do I return a product(s)?
Can I use another brand of air filter? Do you make custom size Flow Stacks?
The K&N RF-1048 Filter is too big for my application. Is there a smaller filter? Do you offer group buys?
Question: Will the BPI Flow Stack fit my intake? TOP

Answer:
The quickest way to determine if the BPI Flow Stack will fit your intake system is to find a measuring tape. Remove the air filter from your intake system. Now measure the diameter of the intake tubing. Based on the measurment you can select the desired option below.


MeasurmentFlow StackComments
2.75" +/- .08" (70mm +/- 2mm)VS300600A reducer coupling is mandatory
3.0" +/- .08" (76mm +/- 2mm)VS300600Can use kit ASM30601, ASM30602 or FSK30601
3.25" +/- .08" (83mm +/- 2mm)VS300600 or VS350600A reducer coupling is mandatory
3.5" +/- .08" (89mm +/- 2mm)VS350600Can use kit ASM35601, ASM35602 or FSK35601
3.75" +/- .08" (95mm +/- 2mm)VS400600A reducer coupling is mandatory
4.0" +/- .08" (102mm +/- 2mm)VS400600Can use kit ASM40601, ASM40602 or FSK40601

Question: How big is the BPI Flow Stack or Flow Stack Assembly? TOP

Answer:
Below is a table of the outer diameter (OD) and overall length (OAL) of the BPI Flow Stack and Flow Stack Assemblies. The OAL is measured from the top of the filter (or stack) to the outlet of the Flow Stack, so this measurement reflects the added length to your intake system from the end of your intake tubing.

Part No.ODOAL
VS3006006.1" (155 mm)2.5" (64 mm)
ASM306017.5" (191 mm)7.9" (201 mm)
ASM306027.5" (191 mm)6.3" (160 mm)
VS3506006.1" (155 mm)2.5" (64 mm)
ASM356017.5" (191 mm)7.9" (201 mm)
ASM356027.5" (191 mm)6.3" (160 mm)

Question: My intake does not fit your Flow Stack, can I use a reducer coupling? TOP

Answer:
You can use a reducer coupling to couple your BPI Flow Stack to an intake system that does not match the outlet diameter of the velocity stack being consider. BPI recommends that your intake system tubing diameter not be more 0.25" larger or smaller than the outlet diameter of the BPI Flow Stack. For example the BPI VS300600 has a 3" outlet, so it is recommended that you not couple this stack to your intake if your intake tubing diameter is larger than 3.25" or smaller than 2.75". This recommendation is based on dyno test data for the VS300600 that showed that a 2.75" intake system with reducer coupling still provided performance enhancements though not as significant when the velocity stack and intake are properly matched. Dyno testing was also performed on a turbo application that showed that a 3.5" intake system flowed equivalent to 3" intake system with the BPI Flow Stack, VS300600.

Question: Can I use my current filter with the BPI Flow Stack? TOP

Answer:
No, you cannot use your current intake's filter with the BPI Flow Stack. All current available BPI Flow Stacks utilize a 6" flanged filter. These means that the filter was designed to clamp to 6" tubing, so unless you were running a 6" intake system, your filter will not properly fit the BPI Flow Stacks.


Question: Can I use another brand of air filter? TOP

Answer:
Yes. The BPI Flow Stack untilizes a 6" flanged filter, meaning the filter is designed to couple to 6" tubing. There are a other manufacturers that develop a 6" flanger filter.


Question: The K&N RF-1048 Filter is too big for my application. Is there a smaller filter? TOP

Answer:
Yes. The K&N RF-1048 filter is has a height of 6". The filter element tapers from a 4.5" to a 7.5" diameter. This a much larger filter that most of the standard 3" cone filters available with aftermarket intake system. THe K&N RU-4600 is a compact alternative that is often used on cold air intake systems in which the filter is positioned behind the bumper. The K&N RU-4600 tapers from a 4.5" to a 7.5" diameter, but is only 4" in height.


Question: Do you ship to my country? TOP

Answer:
Yes, BPI will make every effort to ship to almost anywhere in the world. Understand that it can be rather expensive to ship to some countries, sometimes costing as much as the order.


Question: How much is shipping? TOP

Answer:
Below is a table of BPI shipping fees. Please note that note all countries are reflected in the table below. Shipping charges will be added to your order during check-out. If shipping charges are NOT added during check-out, then BPI will following up with your order and request shipping fees.

Standard Domestic Shipping
LocationLess Than $80Less Than $120Greater Than $120
US Land$9.00$11.00$17.00
Hawaii & Alaska$16.00$19.00$24.00

Two-Day Domestic Shipping
LocationLess Than $120Greater Than $120
US Land$30.00$40.00

Standard International Shipping
LocationLess Than $150Less Than $300Greater Than $300
Puerto Rico$20.00$25.00$30.00
Canada$34.00$35.00$38.00
Phillipines$30.00$33.00$35.00
Others$35.00$37.00$40.00

Question: I placed my order. Now what? TOP

Answer:
Domestic orders will generally be processed within 24 hours and will ship within 48 hours via FedEx Ground services. Once your order is processed you will receive the FedEx Ground tracking information via email. This tracking number can be tracked by visiting FedEx.com. Please note that orders are only processed and shipped Monday through Friday, so if you place your order on Friday, your order will likely be processed and shipped the following week.
International orders will generally be processed and shipped within 72 hours. Our international orders are shipped via USPS Priority Mail due to the signficantly lower costs in shipping internationally, which we can then pass on to our customers. USPS International Priority Mail tracking information will be sent via email.


Question: How do I return a product(s)? TOP

Answer:
If you want to return a purchased product(s), email sales@bpinitiatives.com for return authorization before sending the product(s) back to us. When you email BPI for return authorization, please include the following information in your email:
1. The email address that the order was placed under
2. The reason for return.
BPI will only accept unopened, unused product(s) and in the original product boxes within 30 days from the date your order was placed. All returns are subject to a restocking fee of 15%. The original shipping costs of the purchase will be deducted from your refund. BPI does have the right to refuse a return for any reason. When an item is returned, you will be responsible for the return shipping costs unless the order was an error on the part of BPI. If you return an item(s) that has been opened, installed, or not in a new and sellable condition the restocking fee can be adjusted as BPI deems necessary or we will return the product(s) back to you.


Question: Do you make custom size Flow Stacks? TOP

Answer:
BPI can design and manufacturer any size velocity stack, but currently we only offer our velocity stacks in injection molded PA66 Nylon. The tooling for the injection mold process makes this approach impractical for small volume runs. If you are considering a high volume design for a new application, then the injection molding process will be more economical.
BPI is investigating machine shops to consider machining custom, small-volume requests. This should be a viable solution sometime in late 2008.


Question: Do you offer group buys? TOP

Answer:
BPI does offer group buy discounts. The only restrictions are that payment must be received from a single purchaser, and the group order can only be shipped to a single address. BPI will not process and ship to the individual participants of the group buy. Please contact us at sales@bpinitiatives.com for group buy discounts.

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