DINANTRONICS X In-line Performance Tuners for the Toyota GR Supra

[Syeeee]

Can these be used safely with a dp, catted or catless?

I don't see why not.

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[Dinan_Engineering]

Can these be used safely with a dp, catted or catless?

Yeah, DPT X would function fine with a DP. Would not correct for the resulting CEL in the case of a catless setup, nor would the DINANTRONICS take advatange of a high-flow or catless setup (aka add more boost since there is less restriction), but it would physically perform largely the same regardless. May be some minor performance gain by virtue of the better flow from the DP's but that is about it.