Blow Off Valves - Forge Divertor Valve, 08-10 Cobalt / HHR Turbo

They have it cheaper here

 

You can buy HP tuners and get remotely tuned which you tune the MAF so the information it sends to the ecu is correct. Not doing so usually results in the car running lean and can lead to knock

 

Hmmm. I do have a zzp tune. I wonder if that would be ok? Maybe they richened it up. Couldn't I just compare on the air fuel gauge?

 

No and no. The ZZP tune you have will be tuned for the stock intake not a CAI and will need to be retuned. Our car runs off of the wideband so the O2 sensor will send the info to the ECU that it's lean and compensate for it but like I said if trims are off enough it can knock

 

Just get the recirculating one and you don't have to worry about it tuning the maf for the relocate. It's better if you get tuned for the intake to see the benefits of it

 

That sucks but ok, I don't have to send the ecu in and spend hundreds of dollars do I? What is the best way to do this and from where?

 

Ya thx I am getting the recirculating one. But I didn't think I had to retune just for a cai

 

Well there's 2 ways to do it you can buy another ECU from ZZP or you can buy HP Tuners and get remote tuned that can offer free retunes so next time you add something it's free and you won't have to go through all of this again

 

Really!! I didn't think I was gonna cost that much just to install a cai. That sucks!


Is this a must or only if it knocks?

 

look any mod that you put on an lnf it needs to be tuned for because our cars are so picky. take the advice given to you and it will save you a lot of headache. if i were you get the intake and the recirculating bpv and get an hp tune. find someone in your area who can tune. idk how far away you are from KM043 but im sure if your close enough to him he wouldnt have a problem tuning you. intake you need a re tune for fuel trims, down pipe you need a re tune, intercooler and piping re tune, the lnf is a very picky car but when tuned and dialed in your smiles will be worth the little bit of extra tuning

 

Alright thx. What exactly is a hp tune compared to the zzp tune? Is either one better?

 

Zzp is a good tune but it's a canned tuned but they use hptune. Hptune the way they are talking about it is a custom tune for your mods

 

Sounds like hp is the way to go especially if they offer free retunes. Now where's the best place to get a hp. Keep in mind in in Canada

 

Kmo43 is a good tuner. And it all depends on the tuner whether retune are free or not

 

Oh **** i didnt even look hes in Manitoba. He may be able to borrow somebodys HPT there if he asks nice im a bit of a drive still

 

Thanks eddy! Ya i offer free retunes and give my # so I'm easier to get ahold of

 

I've been running a cai without a tune for a while with no problems. I know im running rich becuase the car is dumping fuel to adjust the af ratio. You should be fine without the tune.

 

Pm sent to KMO

 

Thx that's good to hear but I do wanna get the most out of my car with no problems

 

you may be fine but why not get tuned? the car isnt running the way it should be running that rich man. running too rich can be bad for the car. spend the money and get it done right or take the cai off until you get tuned because having the intake on the car is still only making 260hp with the learn back feature all you did was put an intake on for noise lol

 

On my canned tune years back I had to add meth cause it knocked so bad because it wasn't tuned for the CAI.

 

Replied

 

Bought the car with the cai on it and no tune. Hes said he had it on for a couple years as well. I am planning on getting the canned tune. Simple and conservative. I know all about the learn down. What problems occur with running rich other then ruining the cat converter. I really don't think I am knocking at all. Never had a cel.

 

The premise is this:

The ECU was tuned for the stock air intake, meaning a certain flow past the MAF. When the intake/flow is changed, that changes real vs. calculated flow through the MAF. USUALLY, a new intake would be better flow than calculated which means more air than the computer thinks which means lean conditions. I don't know anything about how the computer uses MAF vs. wideband data, but that's the chemistry.

Lean means knock or detonation, which either leads to fried parts, or best case knock retard and less POWAA. Rich is what you mentioned, crappy economy and dirty exhaust.

 

On a stock tune I don't think you'll have any knock with a CAI because you're nowhere any of the limits of the car. Adding a CAI on a stock tune will give you noise not power. And I hate the stock PE tables they are way too lean from the factory

The wideband will make adjustments to the A/F ratio to make up for the MAF being off logging the trims will tell you the % the MAF is off