Injector Dynamics Fuel Injectors Top Feed 850cc

Part #: IND 850.


Brand: Injector Dynamics
Injector Size: 850cc
Injector Type: Top Feed
O-Rings Included: Yes
Plug and Play: No (Yes w/ adapters)
QTY: 4
Rails Included: No
Mfgr. Warranty: 1 Year Limited
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.


Injector Dynamics provide the absolute best fuel injectors available, and have quickly become the standard for tuners and car builders worldwide. Injector Dynamics fuel injectors are the result of batch testing large quantities of specially modified fuel injectors, and then carefully matching them into sets based on their dynamic flow across the pulsewidth range. The result is vastly superior cylinder to cylinder consistency, even at very low pulsewidths.

In addition to receiving tightly matched injectors, you will be provided with dead time compensation values across the entire pressure and voltage range of the injector. This data will insure that the compensations in your ECU work properly, and your air fuel ratios will remain consistent as atmospheric or voltage conditions change.

Included with this kit are the clips and pins that fit the Injector Dynamics Injectors. You can either re-pin your factory harness or purchase the optional plug and play adapters.





  • AnswerQ: fuel rail upgrade for E-85?  Snack_masta 3 years ago

    will these work with the stock 02 WRX fuel rails for E-85 or do you need to upgrade the fuel rails for these injectors?

    • A: Yes these will fit your stock rails with no issues and will work with E85 or any other conventional fuel.

      Kirill C. 3 years ago

  • AnswerQ: E85  zordon 4 years ago

    Would these be good enough to run E85?

    • A: These injectors do have the ability to run e85. These should be suffice if your running E85 on an STi stock sized turbo. Thank you.

      Sterling W. 4 years ago

  • AnswerQ: STI 2008  SEARCHING... 4 years ago

    Do i need adapter for plug and play for my sti 2008?

    • A: You will need to install new plugs on your wiring harness to adapt them to the ID injectors. The injectors come with new plugs so you can re-pin your stock harness or you can purchase the plug and play adapter harnesses if that is easier. Thank you.

      Tanner S. 4 years ago

  • AnswerQ: correct size?  quincy 4 years ago

    will this be able to handle 500-600hp?

    • A: This would be to small of a injector, you would need at least a 1000cc, or even 2000cc if using something like E85 fuel.

      Kirill C. 4 years ago

  • AnswerQ: adapters?  PROcede 4 years ago

    Do you guys carry the adapters to make these plug and play for a 2011 WRX

    • A: I believe you are looking for part number IND 90.4 which will be listed under the Injector Dynamics category as well. Thank you.

      Tanner S. 4 years ago