Any decent 3rd Party Secondary Air Pumps you've used? 2005 4.7L

Facing that Toyota OEM $497 Air Pump cost and wondering if y'all have found a decent-good Secondary Air Pump?
thanks!

 

Hewitt Bypass is the way to go.

 

Bypass that shiz

 

Thanks
I'm guessing I can't bypass in CA? but haven't looked into it.

 

There are CA members on here using a bypass, I doubt they'll speak up. I know two of them. But it doesn't always solve all the problems, there are plenty who have recurring codes, even after bypass.

Look. I know we never want to spend money. $500 is a month's car payment for a low-end new vehicle. You're already ahead of that game, you have a reliable old vehicle. Your OEM part lasted how long now? Almost 20 years? Buy a fucking OEM replacement for a month's worth of low-end new vehicle payment and move on. Then revisit this in 20 years, when it happens again.

I respect the interest in trying to find a cheaper alternative. But even if you do, even if it's $275, I can almost guarantee you it'll fail within 5, maybe 6 years because it won't be built to Toyota's standards, and when you replace it, you just paid $550 for two pumps ... except now you're paying twice for the labor. and in the 20 years the OEM part would've lasted you'll be on your 3rd or 4th replacement, topping out on $825-$1,100 in parts. Marinate on that for a minute. It's cool to save $$, but to what end, at what expense in the long run?

Buy once, cry once.

 

Bypass is such a stupid waste of time and money. The oem air pump is manufactured by Borg Warner. Googling you will find it for around $50.

 

Really? It takes 30 minutes. That's a waste of time? Plus with the bypass, I'm able to run the older style (less expensive) long tube headers. I'd say bypass is a win. And Hewitt isn't the only game in town, SlyFox is only like $50. Hewitt is plug n play though.

 

I mean, you can build your own kit for under $100. The instructions are here on the forum.

 

It takes longer than 30 mins just to remove and reinstall the intake manifold. There is literally no reason to bypass the system. Cleaning the solenoid is very easy if you have a stuck closed code. Replacing the fan is much easier and cheaper than hacking up your harness trying to get the bypass to work. All you need to do to prolong the life of the fan is ziptie a piece of cloth over the opening to prevent dirt or other debris from damaging it.

 

What's your point? So it can break again down the road? It's not a required function of anything essential to the vehicle, nor emissions standards. So it's pointless beyond posterity of trying to keep it original. Ooh it helps warm the cats sooner for more efficiently removing NOX at start up. Who GAF? Hippies? It's a truck. It also sounds annoying AF like a dentist drill.

 

It has to do with startup emission. Toyota wouldn't have included it for no reason. It does not warm up the cat, it introduces more air at startup to burn the extra fuel associated with a cold start.

 

You know what I meant. It's pointless.
Not even your state requires those things to pass smog.

 

I did the bypass over ten years ago.

I think it cost me $15 in parts.

A relay and some speaker wire is all it is.

 

My point is, you don't need to spend Hewitt dollars if you want to bypass it.

But in general, I'm in the camp of "keep it as intended" if it's your DD. But you do you. I work enough with systems by trade to know that, when you start fucking around with intended operations of how something was programmed, you will eventually find an incompatiblity created by the un-OEM-intended change you've made. And sometimes that's going to get ugly. I can't sit here and pontificate about what that may be when bypassing the SAI pump and valves. But I also don't personally want to find out.

Something I *DO* get sick of, though, is seeing a dozen or more people every year coming here bitching, pissing, and moaning about how they're still throwing codes after bypassing. It happens more often than any of the pro-bypass people on here admit. And, just like lifting, I think it's something we don't talk about enough: Unintended side effects.

 

Yes, it absolutely is a requirement. You don't have a truck equipped with the system and you don't live in CA so you have no idea what you're talking about.

 

Show me. I've never seen it and I've never had an issue in 3 years.

 

And you haven't seen any of the half dozen "still throwing codes after bypass" threads we've seen since, like, Halloween last year? I'd say that's a pretty big unintended consequence.

 

Oh I'm sorry, you didn't know I have an 06 4x4 and an 03. I have to do emissions every year in my county.

 

I have not seen a single one. But I don't pay attention to the home page.

 

Regardless you don't live in CA and you are wrong about it not being required for emission testing. There is a specific emission monitor just for the sais.

 

I've often wondered how they test for a bypassed system at the smog test.

The system is not used when the engine is warm, so the pumps and valves would not be able to be tested...unless they make keep your car overnight until it cools down. Not likely.

 

To be fair to assdog, we have a couple of CA members on here running bypasses (at least one is Hewitt) and they pass emissions every time.

 

Yeah there is. I used to be an inspector in my state. But guess what? My 06 still passed inspection wih the Hewitt bypass. You know why? Because that monitor doesn't matter.

 

The bypass system works (IIRC) by fooling the ECM into thinking the ambient outside temp is below actual, because the system doesn't kick on below XX degrees outside.

So one test could be to verify whether the ambient temp the ECM thinks is happening outside jibes with the actual outside temp. But I don't know exactly where they'd probe to find that. They could also listen for the pump to spool up in the first 30 seconds of ingition.

 

Good for you. You have no business making assumptions about CA emission testing. All monitors must be ready including the one for sais.

 

Really? Because I've never discussed CA emissions with my CA buddies here? To my understanding TX emissions are more strict.

 

It doesn't matter what you think or feel. You are wrong on the subject period.

 

Good points.

 

I don't know about that. I have the IAT monitoring on my scan gauge at all times and it's reading off the ECM and it never gives me some crazy low temp from ambient on start up.

 

Yes they do