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Tapout's downpipes with the hollow chamber resonators sound AMAZING on these cars. They increase turbo spool sounds, and add some exhaust 'bite' with zero drone. Oxygen sensor spoof devices do not work on these cars. However, there are several solutions for the catalyst inefficiency codes...

Substantially!

That works for sure. You can also just remove the factory's internal baffle and it won't cost you any money.

We agree this platform is phenomenal and we take these engines past 7,000 all day long with stronger valve springs. https://www.tapouttuning.com/product/lf4-lf3-mace-stage-1-valve-spring-and-retainers-package/

We are looking for a CT5-V (non Blackwing) in order to develop aftermarket performance downpipes. The CT5-V Blackwing uses exhaust manifolds, which can be upgraded to headers. These already exist in the aftermarket. Sorry for the confusion on this!

If you add stronger valvesprings and a Super Damper, this is not a problem. Tapout Tuning stocks both products.

There is no need to manually adjust fueling on these cars. Since they have wideband oxygen sensors from the factory, this happens automatically. :)

These cars from from the factory with dual wideband oxygen sensors. However, widebands measure the air/fuel mixture (i.e. richness). They don't have any way to determine fuel octane.

This is solid information. With the stock tune, you won't gain anything from higher octane fuel. With aftermarket tuning, we can turn up the boost and/or ignition timing advance to match your fuel octane. https://www.tapouttuning.com/product/remote-tune-for-e99-global-b-vehicles/

That's correct. M6 cars have a higher range of launch control settings than A10 cars. This is by design, in order to keep the engine from stalling on launch.

That's not common at all. The factory turbos on these engines are excellent.

We receive telephone, private message and email requests for these every day. But unfortunately, we haven't been able to locate a volunteer. I'm sorry guys!

Only the Fuel Bias carries over, and you have it set to 20, which is correct.

You can run Map 2 as is, since the Map 6 Boost column is only used when running Map 6.

Yes, this was one of the delays early on, and has since been resolved.

Corsa is working on the CT5-V Blackwing exhaust system this week. If it sells well, they'll consider expanding into other Cadillacs.

Much appreciated Patrick!

Nice work finding the problem John!

There are two vacuum lines that commonly get missed when people replace their throttle body and/or spark plugs. We have pictures of both at the bottom of the spark plugs page of our website. The one that's toughest to see is the one most people miss...

I doubt it.