Banks Power 17-19 GM 2500 6.6L L5P Derringer Tuner (Gen 2) w/ 1.8in iDash DataMonster

Banks Power 17-19 GM 2500 6.6L L5P Derringer Tuner (Gen 2) w/ 1.8in iDash DataMonster

Marsoni

M251S

$444.50

Get it in 3 business days with 1 day shipping. Friday, May 29

Banks Power 17-19 GM 2500 6.6L L5P Derringer Tuner (Gen 2) w/ 1.8in iDash DataMonsterStops the competition dead in their tracks. Six years of engine and chassis dyno experience developing and selling this engine for military use results in our torque and power gains across the full operating rpm range, starting right off idle and marching to the shift point in each gear. Derringer is dyno calibrated to use multiple data inputs just like your engine's ECU. So its microprocessor based electronics are able to actively and safely optimize

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I've found this brand to have gotten better over the years as far as offering the American market what it needs in terms of realistic sizing. I only wish they'd realize that there are a lot of us who are long in the back and arms where my only choice is to go a size up and sacrifice a slim fit for sleeves that are long enough plus a back that doesn't go up past my waist just because I reach up for something, that and I like to be warm. So these are such nice quality turtlenecks that it's hard to complain about but maybe the company will read this. The snug neck stays up is plus number one since that's why I'm buying a full neck. They come with very nice weaves in the fabric, good enough for casual or formal wear. Finally the warmth you seek is there but I've worn them in what most would think isn't the right temp for a turtleneck. Also they have them in white! Yes, a lot of others just don't for reasons I can't fathom, and the pic you're seeing is accurate, these will form to your shape without being ridiculously thin material. Several washes later and they are as fine a garment as when I first wore them. I've only found one other brand that compares to these but it's much more expensive, COOFANDY is affordable in these times of expensive everything. Warm but also a lightweight shirt, I've gotten them really dirty with actual dirt and it washes out so well you'd never know it. Don't let my taking off one star stop you, try one yourself and you'll be coming back for more.

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Reviewed in the United States on July 30, 2025

Verified Purchase

Larry

Alexandria, US

★★★★★ 5

Quality,warmth and fit

Color: Royal Blue, Size: Small

Really top quality. This is my 4th purchase of these Really great sweaters.

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Reviewed in the United States on February 12, 2026

Verified Purchase