3.7 V6 Mustang MPT 87 PR-X Tune Review

Published on July 23, 2020
Duration: 15:06

This review of the 87 PR-X tune for a 3.7L V6 Mustang highlights significant improvements in throttle response and gear shifting compared to the previous economy tune. The reviewer notes a return to factory-like pedal feel and a more appropriate gear selection strategy, preventing engine lugging at lower speeds. While power output is comparable to a previous 93 octane SCT tune, the improved drivability in 'Drive' mode is a key takeaway.

Quick Summary

The 87 PR-X tune for the Mustang 3.7 V6 offers a significant upgrade in drivability, restoring factory-like throttle response and implementing smarter gear shifting strategies. It prevents engine lugging by delaying 6th gear engagement and provides firm, precise shifts, especially in manual mode, outperforming previous tunes and even some higher-octane options.

Chapters

  1. 00:00Introduction to 87 PR-X Tune
  2. 00:52End of Day 2: 87 PR-X Tune Impressions
  3. 01:01Throttle Response Restoration
  4. 01:22Gear Shifting Behavior in Drive
  5. 02:01Preventing Engine Lugging
  6. 02:46Comparison to SCT 93 Tune
  7. 03:04Firm Shifts and Chirp
  8. 03:24Manual Shifting Improvements
  9. 04:04Criticism of Sport Mode
  10. 05:04Sport Mode Short Shifting
  11. 05:43Sport vs. Drive Throttle Input Comparison
  12. 06:49Sport Mode in Curves
  13. 07:11Tune Adjustment Window
  14. 07:48Manual Shifting Praise
  15. 08:46Future Plans: 93 PR-X Tune

Frequently Asked Questions

What are the main benefits of the 87 PR-X tune for a Mustang 3.7 V6?

The 87 PR-X tune significantly improves throttle response, restoring it to factory levels. It also optimizes gear shifting, preventing engine lugging by holding lower gears longer and providing firmer, more predictable shifts, especially in manual mode.

How does the 87 PR-X tune affect gear shifting compared to previous tunes?

This tune prevents the transmission from shifting into 6th gear until over 60 mph, avoiding engine lugging common in older tunes. Shifts are firmer, and manual shifting is greatly improved, offering precise control without slippage.

What are the drawbacks of the 87 PR-X tune?

The primary drawback is the 'Sport' mode, which shifts too early and too frequently, even at low throttle inputs. This behavior is counterintuitive for a sport mode and is a point of dissatisfaction for the reviewer.

Is the 87 PR-X tune comparable to a 93 octane tune in terms of power?

The reviewer found the 87 PR-X tune's power and pull to be comparable to a previous 93 octane SCT canned tune. This suggests good performance gains are achievable even with 87 octane fuel.

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