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  |_ AGP Turbo and Accessories
  |_ HEMI 5.7L,6.1L TwinTurbo Kits
  |_ Turbo Accessories->
  |_ Turbo Blow Off Valves->
    |_ Apexi Blow Off Valves
    |_ Blitz Blow Off Valves
    |_ Greddy Blow Off Valves
    |_ HKS Blow Off Valves
    |_ Perrin Blow Off Valves
    |_ Turbo XS Blow Off Valves
    |_ Turbonetics Blow Off Valves
    |_ Vortech Blow Off Valves
  |_ Turbo Intercoolers->
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  |_ Turbochargers->
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Customers

Jim A.

Jim A.

Two year champion in modified tractor pulling classes named "Watch This Trick". Chrysler 426 Hemi. Thanks for the Great Service!
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Buyer

Super guy to deal with! GREAT SERVICE!! GREAT PRICE!!
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Robert S.

Robert S.

Great parts and service! Robert
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Robert S.

Robert S.

426 Hemi Cuda
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Robert M.

John, Thank you for all you have done, From your previous email responses, you seem to be old school, a man of his word. Thanks again John for...
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Phil S.

Phil S.

Great job creating this Dakota R/T Ground Affects Kit. Phil
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Steve B.

Steve B.

Thanks for the help with my 426 stroker.
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Dan F.

Dan F.

John, The truck is not done but i drive it daily and it runs good now. Eventually id like to do the rear brakes! Thanks
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Mike M.

John's very honest, something that's hard to find these days. This means he'll tell you the truth and you may not want to hear it. LOL. The best...
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Ian A.

Ian A.

I wanted to thank you for all your help and support, for being so patient and for being a good, honest person and especially so professional....
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Hannu O.

Hannu O.

thank you very much from Finland!
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Darren B.

Darren B.

John,Racing flat out on the 440/533 engine over 1 season & 65 passes at 8.97@150mph 1.27 60' getting great results!!Engine is GREAT!Thanks mate!
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Ricky J.

Thanks for all the info, you have been a great help and a credit to your company.
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Brian R.

John!! Got my Viper back together, dyno tuned. Super happy with the results of your work!! Gained 112 RWHP and 107RWTQ!!!!! More at the crank. Sounds...
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Kris L.

John, Sitting in the car with a big smile on my face. Thanks for the quality brand products and the great price. Cheers Kris
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Derek B.

Derek B.

Great Personalized service. Derek
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Felix C.

How awesome is this! This superb service is exactly on point w/what everyone have raved about. Thank you, Felix
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Billy W.

Billy W.

Dakota R/T 408
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David P.

David P.

Thanks for the brake lines !
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Michael W.

Michael W.

After getting all the compatible stuff shes a beast! Michael
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Michael D.

I just wish there were more guys like you around for us gen3 guys. Most just want a sale and don't care to actually help let alone give advice or...
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Ricky H.

Ricky H.

Thanks for everything John. The headers are great !
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Brian A.

Brian A.

The 408 engine runs strong, put on dyno 405hp with 415tq N/A not shabby.. also was on 22" wheels with those numbers est. 500-525 @ crank. Thanks so...
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Bruce P.

Bruce P.

John, you have been so prompt and helpful. Take care my friend and thanks again. I'll be back. Bruce
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Jared B.

John, You Rock! Thanks again for the great deals and speedy service. Really appreciate it. Jared Dakota R/T
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Apexi Blow Off Valves and Accessories

APEXI TWIN CHAMBER BLOW OFF VALVE

High-flow blow off valve

Compatible with a wide range of applications, from stock to high boost setups. Attractive finish.

A good blow off valve is an absolute necessity for high performance turbo systems. A well-engineered blow off valve prevents turbine damage by quickly relieving excess boost pressure without sacrificing boost response. Conventional blow off valve designs require choosing between flow capacity and boost response - blow off valves with high flow capacity generally have poor boost response, while blow off valves with good boost response are not able to handle high flow capacity. A'PEX engineers have developed a solution to this dilemma by creating the Twin Chamber Blow Off Valve.

The Twin Chamber Blow Off Valve is an adjustable, high-response unit for use on a wide range of applications. Rather than relying on the vacuum chamber alone, the Twin Chamber Blow Off Valve harnesses boost pressure in a second chamber to assist in opening the relief valve. This design allows the use of a unique flat-valve design, which provides excellent valve response under both low and high boost conditions without sacrificing flow capacity. Valve reaction is adjusted by tightening or loosening the spring tensioning screw on top of the unit. Blow off sound can be adjusted by turning the red collar at the base of the unit. With its innovative design and adjustment features, the Twin Chamber Blow Off Valve is flexible enough for use on street cars as well as race cars.





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