SPEtuner Promo Codes
There's a low chance you'll find a working SPEtuner promo code right now. On this page you'll find all 16 codes ranked by what's worked at checkout. The best one to try is NCE15, though nothing's a sure thing.
How often SPEtuner codes work
Each bar is one week of real shopper results: the greener the bar, the better the chance a code worked that week. Paler bars carry limited data.
| Discount | Last used | Performance | Promo code |
|---|---|---|---|
| 18% off + Free Shipping | 12h ago | Code hidden — select Show to reveal and copy it | |
| 17% off diesel upgrades | — | Code hidden — select Show to reveal and copy it | |
| Up to $139 off Diesel Performance Upgrades | — | — | Code hidden — select Show to reveal and copy it |
| Up to $100 off 6.7L Diesel Upgrade | — | — | Code hidden — select Show to reveal and copy it |
| $100 off 6.6L L5P Flash Sale | — | — | Code hidden — select Show to reveal and copy it |
| 15% off for military members on Spelab products | — | — | Code hidden — select Show to reveal and copy it |
| 15% off EGR System Optimization Kits | — | — | Code hidden — select Show to reveal and copy it |
| Up to 66% off Parts | — | — | Code hidden — select Show to reveal and copy it |
| 18% off everything | — | — | Code hidden — select Show to reveal and copy it |
| 20% off diesel parts, Free Shipping | — | — | Code hidden — select Show to reveal and copy it |
| 16% off Halloween Sale | — | — | Code hidden — select Show to reveal and copy it |
| 20% off Intercooler Kit | — | — | Code hidden — select Show to reveal and copy it |
| $179.6 off | — | — | Code hidden — select Show to reveal and copy it |
| Promo code: COVER… | — | — | Code hidden — select Show to reveal and copy it |
| $199 off | — | — | Code hidden — select Show to reveal and copy it |
About this page
Introducing a more honest way to find coupon codes
Every code has a history, and we track it
Codes fail for boring reasons: they expire, they only cover one category, they only apply to a first order. Calling any of them "verified" would be a guess dressed up as a fact. We publish the chance instead, built from checkout data and shopper answers, and we track it over time.
Likely not workingMixed resultsHigh chance of working
You'll find one of these charts on every code we list, tracking how it has performed over time.
When there is nothing worth trying, we say so
When we don't think there is a working code for a store, we say so right at the top of the page, before you spend time scrolling.
Good chance right now78%
Nothing likely right now9%
A code that works at breakfast can be dead by lunch. Nobody can promise otherwise, so we don't stamp anything here as "working" or "verified". We tell you the chance of a code working instead, based on real shopper feedback and data, and when the chance is poor we say that out loud.
