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Summer Closure
RX7 ECU's, both DTI install and self install, will NOT be processed between July 8th and July 15th. If your ECU is received after July 5th, it will not be processed until after July 17th. Please plan your ECU shipment to us accordingly. All other non-Rtek orders will be processed normally during this time.

Rtek7 S4 TII Stage 1

Rtek7 Home >> S4 TII Stage 1ORDER AT RIGHT

digital tuning, inc. is proud to offer a line of RX-7 ECU upgrades. The Rtek7 ECU Upgrade is a replacement ECU chip for Second Generation RX-7s. This unique upgrade offers features not found anywhere else in such an easy to install system.

Update Information:

If you are looking for update information on an Rtek7 Upgrade you already own, including updates for the Secondary Transition Stumble Elimination feature, please see the update page.

Rtek7 for 87-88 (S4) TII
(N332 & N333 ECUs only)
NEW! - Secondary Transition Stumble Elimination [details]
Single replacement ECU chip
No wires to splice, no "black box" clutter
Built in Fuel Cut Defenser (FCD) [details]
Extends engine life by defeating the Accelerated Warmup System (AWS) [details]
Easily clear an engine flood without opening the hood [details]
Minimum Primary Injector size [details] 550cc 550cc* 720cc*
Minimum Secondary Injector size [details] 550cc 720cc* 720cc*
Lower secondary staging ~3500 rpm [details]
Increase primary injector duty cycle cap by ~5% [details]
Timing retard above 9psi;
~1deg per psi [details]
Read more information on installation choices here.
Self Install: $120 $130
DTI Install: $140 $150 $150

*Requires this size or larger injectors or engine damage will result.

Order: or Find a Dealer

Rtek7 ECU Upgrade
Version 1.5
$120 / $140
(Self / DTI Install)

Version 1.7

Version 1.8
$130 / $150
(Self / DTI Install)

Upgrade from v1.x
to v1.7 or 1.8
$15* / $30
(Self / DTI Install)

* 1.x chip must be sent back before upgrade chip is shipped. Self Install Upgrade to 1.7 not available.
Customer review:
Rtek7 ECU Upgrade:
The fuel cut on cranking (anti flood) function worked great! Rebuilds flood consistently when first started for a few hundred miles, so this ... more
-Kevin Landers, Morristown, TN
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