I always ran NGK TR55’s in my 97 Cobra with the nitrous, loved them.
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Get refunded and buy a IC and cai separate and grab a mpt tune if they don’t send it by end week
Guys also make sure ya add the spd turbo adapters to your mods along with the whipple stage 1 kit. I didn’t think it was really worth getting until I had my Borla atak exhaust with stock turbo adapters for 2 weeks and then changed to spd adapters, the change in sound alone was so great that it has to be adding some more hp gains, everyone that had heard my truck before spd adapters and then after all thought I had changed exhaust completely clauses it sounded so different.
The shop that installed all my mods could not install the turbo adapters because they were scared one of the bolts was gonna break and it did break when I got it installed so I just bought the adapters and didn’t install them for 2 weeks, I wasn’t really worried bout installing them cause I thought it wouldn’t be enough of a difference to even tell. But I was completely wrong, so I tell everyone that’s doing performance mods to their truck to be sure to change the adapters. I’m not exaggerating at all either, just the sound difference it made in the exhaust was worth it. I run the Borla atak exhaust and love it. It will never sound sweet as a v8 but I do believe mine sounds bout as good as one can. It’s not even loud like I was worried about, with down pipes, h pipe, resonator, adapters, cai, Borla atak it really a deep sound and only sounds off when I get down on it and everyone says it sounds great. In the cabin it’s so quiet that I never notice it till I stomp it and then I notice it. It sounded like a fart can alittle without the adapters but once installed them It’s perfect. I need to try to make a video to share the sound