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Hewitt tech bypass module for secondary air injector pump

Discussion in '2nd Gen Tundras (2007-2013)' started by Leifels122, Feb 14, 2017.

  1. Feb 14, 2017 at 2:37 PM
    #1
    Leifels122

    Leifels122 [OP] New Member

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    Has any one installed a Hewitt tech bypass module for secondary air injector pump on a 2011 4.6 tundra?
     
  2. Feb 12, 2019 at 10:42 PM
    #2
    brickman

    brickman New Member

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    well, I guess no one has tried this device, I myself would like to hear from someone that has any information on this bypass kits. I would probably install one if I could get some pointers.
     
  3. Feb 13, 2019 at 1:26 AM
    #3
    koditten

    koditten New Member

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    I have the home built version on my 08. It works perfectly for the last 100k miles.

    The 4.7 is a much less produced engine, so not as many people have had to bypass the system.

    FWW, I think the Hewlett system is way overpriced.

    My system was $15.
     
  4. Feb 13, 2019 at 1:29 AM
    #4
    CMB

    CMB New Member

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    Not nearly enough room here!
    OP is asking about his 4.6 V8. From what I've read that engine is really similar to 5.7's:confused:
     
  5. Feb 13, 2019 at 5:11 AM
    #5
    Wynnded

    Wynnded What MPG...

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    2011 RCSB S/C'd 5.7L AWD Tundra
    OEM Upgrades: TRD PRO BBS Wheels TRD S/C, Viktor G Tune and +2 psi pulley TRD Front Sway Bar TRD Rear Sway Bar Fox TRD Pro Shocks Limited mirrors (auto darkening/backup camera/power fold/puddle lights) Limited Grill Mod Automatic Climate Controls Mod Automatic Headlamp Mod Sequoia Transfer Case Mod Sequoia Leather Steering Wheel Mod Sequoia Limited Gage Cluster Mod Sequoia LED Headlamp Upgrade Window Tint Fake Manual Transmission Mod 10" BAMufflers Stainless Catback Engine Block Heater Illuminated Ignition Key Ring Mod Deck Rail System w/cleats
    I have had one on my 5.7L for a couple of years. Assisted with testing a couple earlier versions. No issues, I forget that it's even there. He's made it pretty much Plug and Play if you're not into DiY. It's a sealed matchbox sized box that plugs into the harness with one wire that needs to be run to a relay in the engine bay fuse box.
     
    ColoradoTJ likes this.
  6. Feb 13, 2019 at 5:38 AM
    #6
    parker44

    parker44 New Member

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    I installed the Hewitt Kit last year on my truck, probably had it on for about 5 or so months and have had no issues. I have an 08, 4.7L and this was the second time my AIP went out. First time was replaced under warranty, second time I was not so lucky. While I was still under the mileage, my truck was out of the 10 year mark by about 3 months.

    Anyways, I researched around and did not want to go the DIY route as with my luck I would have screwed something up. The Hewitt Kit was EXTREMELY easy to install and I liked the guy. He knew a lot about the issue and his products, and offered support. Also turns out that their company is only about 20 minutes from my house haha.
     
    Wynnded likes this.
  7. Feb 13, 2019 at 11:52 AM
    #7
    brickman

    brickman New Member

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    thanks, everyone for getting back to me on this subject.my truck is in the shop now. I guess the intake valves on the driver's side, code comes up saying that they are bad. this is along with a blown fuse for the pumps. gave permission to replace right side valves and fuse. they ran a few scans before and only thing came up was the valves and fuse. then when this work is done. they will run another scan and they are hoping nothing will come up as am I. Will know today. But I am a little confused why did they valves go bad in the first place?
     
  8. Feb 14, 2019 at 4:07 AM
    #8
    Wynnded

    Wynnded What MPG...

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    I think that they can get crud and moisture in them and get corroded and either stuck open or closed. I've read that the motors that direct air to the valves can also ingest moisture and get damaged that way.
     
    parker44 likes this.
  9. Feb 21, 2019 at 10:14 AM
    #9
    Rubberdown

    Rubberdown Spilling my guts here.

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    Yeah I took one apart and I unjammed it. It’s just carbon buildup and crap from the exhaust over time. That being said it didn’t work after I broke it all loose so go figure
     
    Wynnded likes this.
  10. Feb 21, 2019 at 3:06 PM
    #10
    CaptSpaulding

    CaptSpaulding ...ain't nothin but nothin

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    Same here. Got all the crazy flashing lights, but had full power. Made the mistake of pulling the battery cable to reset the code....then into limp mode and wouldn't idle anymore. Took valves and pumps apart, cleared out carbon and gunk, no luck. Checked voltages, no power to bank 1 pump, purchased a pump thinking that was the issue, nope. Finally took it to Toyota, $2950, a full system replacement (both valves, both pumps, and the newer inlet tubes with the cowl). Service writer said one of the valves was broken. I missed the service recall by 5500 miles
     
  11. Dec 3, 2019 at 12:03 PM
    #11
    hewitttech

    hewitttech New Member

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    Secondary Air Injection System Bypass Kits
    I realize this is an older thread but if anyone has any questions just give us a call Toll Free 844-307-7671 or contact us by email support@hewitt-tech.com
    We also have our new Gen-II bypass kits available which are the best solution for the secondary air problem going forward. You can find them here: Hewitt Tech Gen-II Bypass Kit for secondary air injection system, air pumps, air switching valves and air injection control drivers. I always struggle getting notifications from the forums so just contact us directly.
     
    MacCTD, focal and Wynnded like this.
  12. Dec 5, 2019 at 6:22 AM
    #12
    Maverick61

    Maverick61 New Member

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    Service Department with bad news regarding my 09 Tundra, Code P2440, Cost to replace AIJ and pumps $3,174.00. Ordered Gen II bypass kit, going to do install tomorrow.
     
  13. Dec 5, 2019 at 6:44 AM
    #13
    hewitttech

    hewitttech New Member

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    Secondary Air Injection System Bypass Kits
    Ouch... that is almost Lexus price range.
     
  14. Dec 5, 2019 at 7:25 AM
    #14
    MacCTD

    MacCTD New Member

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    Just wanted to say I recently purchased one of your kits and had numerous questions prior to purchase and several after install, your tech support was great both before and after the sale, I would highly recommend your product to anyone. Thank you for providing it and saving me over $2k. :cheers:
     
  15. Dec 8, 2019 at 12:06 PM
    #15
    Knolls67

    Knolls67 New Member

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    Just another customer here to praise your product and dedication to your customers. I sent an email to this guy on a SATURDAY AFTERNOON and he emailed me back that evening. Stand up guy and a great product saving thousands for lots of folks getting shafted by Toyota.
     
    SanAntonioKid12 and hewitttech like this.
  16. Dec 8, 2019 at 7:41 PM
    #16
    Maverick61

    Maverick61 New Member

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    Had gen II kit installed by local mechanic, $90.00, commented very straightforward install and design looks like it a Genuine Toyota part. No more dash lights, truck runs great and saved me $2500. Becky was great with all my questions.
     
    hewitttech and Wynnded like this.
  17. Dec 9, 2019 at 10:45 AM
    #17
    hewitttech

    hewitttech New Member

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    Secondary Air Injection System Bypass Kits
    Thanks for the feedback guys. It is always nice to see and have our handwork appreciated! If you have a min. please also leave feedback for the GenII kit on the website here: Hewitt Tech GenII SAIS Bypass Kit and anywhere else you think it might help people. Those posts with a link back to our website like this one really help us the most. If you run into anything else you know where to find us.. thanks again.
     
  18. Dec 11, 2019 at 6:58 AM
    #18
    Scottyp857

    Scottyp857 New Member

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    None yet
    After yesterday raining and cold my truck check engine light has gone off again as if nothing wrong. Maybe I have a different problem causing it to activate. The cost for the new bypass is $200 more for the newer Gen III . Don't want to spend more dollars if I don't have too. Any feedback would help. Thanks
     
  19. Dec 11, 2019 at 7:20 AM
    #19
    hewitttech

    hewitttech New Member

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    Secondary Air Injection System Bypass Kits
    The only way to tell for sure is to know what your trouble codes are. That is always the first place to start. As far as the secondary air injection system goes, problems with it can sometimes start out intermittently. Most often they start happening more often and quickly the problem gets worse until you are full on stuck in limp mode. Again, you have to start with the codes to know for sure. If they come back on give us a call and we would be glad to advise you on your codes. Toll Free 844-307-7671
     
  20. Jan 16, 2020 at 5:00 PM
    #20
    2010Tundra Red

    2010Tundra Red New Member

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    I have a 2010 Tundra 4.6 I have 143,000 MI just replace both secondary air injection pumps code p 2440 unable to currently get rid of it disconnect battery our two unplugged computer harness on firewall no good looking to buy a Hewitt bypass system will be calling tomorrow.
     
  21. Jan 16, 2020 at 5:23 PM
    #21
    MikalMuh

    MikalMuh New Member

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    I have a 2012 4.6. Installed the 2nd generation Hewitt device a couple weeks ago. All is well now. Toyota had quoted me near 3K.
     
    hewitttech likes this.
  22. Jan 21, 2020 at 12:40 PM
    #22
    hewitttech

    hewitttech New Member

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    Secondary Air Injection System Bypass Kits
    The GenII kit is the recommended kit for all of the 4.6L vehicles. If you have a P2440 code that you cannot clear it is likely the pressure sensor in your Bank 1 air switching valve is damaged. For that we have the Pressure Sensor Replacement Options (PSO), they are the only kit addons that we have or are potentially required with the GenII kit. Nothing else needed, nothing to program, nothing to mess with the sensors just install in place of the factory air injection control driver(s) and plug the harnesses into the air switching valves, clear the code if you didn't have the battery disconnected and you are done.
    The GenII kit will also allow the emissions monitor to run and show complete and the permanent codes stored will drop out by themselves the first time it runs.
    Like our other kits they are solely for off-road or emissions exempt use only.
     
    Wynnded likes this.
  23. Feb 3, 2020 at 2:03 PM
    #23
    gasguzzlr

    gasguzzlr New Member

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    for those of you with up to 2013 tundras, shouldnt the repair be fixed under the AIP special warranty? It should be good for 10 years, 150 thousand miles.

    I have a 2010 tundra 4.6L that I bought in 2011 with 118K miles, went into limp mode today. Called the dealer, they said it would be covered until June 2020.

    im going to get a hewitt kit, what is the benefit of the Gen II vs the Gen I?
     
  24. Feb 6, 2020 at 5:37 AM
    #24
    hewitttech

    hewitttech New Member

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    Secondary Air Injection System Bypass Kits
    No. The 10 year, 150k mile warranty extension you are covered under only applied to certain 2007-2010 vehicles. Some 08-11 were covered under a 3 year 36k mile warranty extension but that is completely expired. There has never been another warranty extension for the length of time the one you are currently being covered under. Currently I think the only vehicles that are covered under any extended warranty are the last of the 2010 vehicles that are still under 150k miles and haven't hit their 10 year mark yet. A failure is still probably covered if it falls under your new car warranty period but I think all of the extended warranties for it are pretty much gone now.

    The GenII kits are by far the better solution. They are a complete stanalone solution and emulate the entire system by replacing the factory air injection control driver. Unlike our older units that only prevent the system from running they do not need any kit addons for things like bad pump motors or solenoid valve circuits. In fact the GenII kit doesn't even care if the air pumps are still on the vehicle and the computer will still think everything is present and operating like it should be. It also does not have to alter and of the temperature sensors or connect to the starter relay to make sure it is triggered correctly. Once the GenII kit is installed the only thing that remains in the system is our unit, the pressure sensors in the air switching valves (or Pressure Sensor Replacement Option kit addons if they were damage), the wiring and the computer. It pretty much completely eliminates the possibility of getting any trouble codes or having any problems from the system..ever. When using one of our older kits, even though the system no longer runs, the aif injection control driver is still actively monitoring the system so there is still the possibility of getting codes later on that would need additional kit addons added to the kit to take care of and that is not the case for the GenII other than the pressure sensors and the chance of having a pressure sensor go bad after the fact unless it was already questionable are practically null at this point.

    If you have any other questions just let us know. Please give use a call Toll Free 844-307-7671 or visit our https://www.hewitt-tech.com you can also find the GenII kits here: Hewitt Tech GenII SAIS Bypass Kits
     
    rons23 and Wynnded like this.

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