L99 Cam Questions

[KingRW3]

Recently had a dod failure on my 2010 Camaro SS l99. I have now since bought a BTR Stage 2 V2 cam kit. I'm planning on taking my time piecing the car together at my friends house but for when the car is put together is it safe to drive it home i live less than 10miles from him. I plan on putting it back under a cover until I save money and get everything situated with a tune shop. Could I drive it to the shop as well? And along with this cam I am thinking of doing short tube headers would that be a bad thing?
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[1JEWLDSSRS]

Just as I was thinking.. Read through this info. I would flatbed it, or trailer it home, and to the shop..

https://www.camaro5.com/forums/showthread.php?t=595872

[Mouse330]

When I installed the TSP cam in my car a couple winters ago I sent my PCM to them while it was apart, which is Mail Order Tuner and they sent it back, I installed it cranked it right up and it runs perfect. I would think you should be able to do the same with BTR.

[Bigdumogre]

There is no use of short tube headers. Long tubes are the only ones that will give you any increase in power. Do it all at once so you only pay one tune.

[1JEWLDSSRS]

Yeppers, shorties are a waste of money, unless you live in a state that doesn't allow LT's. They do not gain you much over the stock manifolds..

[ss camaro-monte]

Definitely get it all done at once so you only have 1 tune. I spent a lot of extra money on tunes because I have had 3 tunes since moding my car. 1 for the full bolt on tune, then another for the converter and finally when I did cam, heads gears I needed another tune. Don't know how much tunes are by you but here they are 400-700 a pop if you dyno tune like I did.

[KingRW3]

[QUOTE=1JEWLDSSRS;11452344]Just as I was thinking.. Read through this info. I would flatbed it, or trailer it home, and to the shop..


But that's begs the question how would I know if there is any leaks or any mechanical issuses or even filling the engine with coolant and oil before it goes off for the tune?

[KingRW3]

Originally Posted by 1JEWLDSSRS

Just as I was thinking.. Read through this info. I would flatbed it, or trailer it home, and to the shop..

https://www.camaro5.com/forums/showthread.php?t=595872

But that begs the question how would I know if there is any leaks or any mechanical issuses or even filling the engine with coolant and oil before it goes off for the tune?

[1JEWLDSSRS]

Well from what I gather from seeing some other posts, and what we did with my Camaro when we did the cam swap, if you have everything installed correctly, and all buttoned up and filled with fluids, you can start the car up and run it to check for leaks, but I wouldn't rev it or do any driving of it until it is tuned. It'll run, but not very well because the ECM won't know what to tell the engine to do with the new cam profile.

[acammer]

L99's require a tune in order to run properly after an AFM delete. The ECM will look for the VLOM, and when it doesn't find it, it will assume that it no longer has control of the valve-train for those cylinders, and will disable the fuel to them and run as a V4. Combine that with a bunch of other tables not calibrated for the changes that the camshaft requires and it will run extremely poorly, and is not driveability in any sort of practical way.

[gtstorey]

On some GM this will also set a permanent DTC that will never clear since it can never get a passing test. Doesn't matter if you don't have to pass emissions testing that looks at codes since you can just turn of the light for that code. And in some jurisdictions, it won't pass the test even without the code. But there seem to be some jurisdictions that the cam change will pass but the permanent DTC won't.

[1JEWLDSSRS]

Originally Posted by acammer

L99's require a tune in order to run properly after an AFM delete. The ECM will look for the VLOM, and when it doesn't find it, it will assume that it no longer has control of the valve-train for those cylinders, and will disable the fuel to them and run as a V4. Combine that with a bunch of other tables not calibrated for the changes that the camshaft requires and it will run extremely poorly, and is not driveability in any sort of practical way.

Yeah, I didn't think about that with the L99. I'm thinking probably the vids I did see were LS3, manual cars being started without a tune.

[Moto-Mojo]

This was my concern when asking about AFM lifter failures in other threads. Many treat these as 'business as usual' and a good excuse to upgrade. Which it might be however, it's still bullshit, in my opinion, that us L99 people are relegated to driving ticking time bombs. And that it's just par for the course to potentially grenade a $12K motor. .