OBD1 Chipping Services
- Basic chipping with custom map for USDM & JDM ECU’s
- Non-VTEC to VTEC conversion (Rectangular ECU’s only)
- Auto to Manual conversion
- Bench testing + repair services on capacitors, IC17, and burned “Q31” transistor
read about common OBD-1 issues relating to these parts HERE - Boost solenoid parts installation
OBD1 ecu’s I support for said services:
- USDM: P05, P06, P07 (w/11F0 board), PR4, P28, P30, P61, P72, P74, P75
- JDM: PR3, P08, P13, P27, P29, P30, P72 (kinda hate these!), P91
Standard Chipping w/Custom Map
This service consist of socketing your ECU and ‘burning’ (programming) a custom map to an EPROM chip. The socket makes it easy for future EPROM chip swapping. In the old days, EPROM’s would be soldered straight to the board.
Programming options:
- Custom VTEC crossover rpm
- Custom rev limiter
- 2-step rev limiter
- Custom VTEC crossover rpm
- Custom fuel + timing maps
- Disabling of knock sensor
- Disabling of primary 02 sensor
- Disabling of VTEC pressure switch
- Injector size change
Available Program Stages:
Stage 1 is a mild map, along the lines of stock Integra Type-R programming.
Stage 2 is a semi-mild map, with Type-R like programming before crossover & enhanced maps while in VTEC.
Stage 3 is a race map, with enhanced programming before VTEC and while in VTEC.
I do have several NON-VTEC programs for SOHC + DOHC applications. Inquire within with your details.
Fee: $125 – includes return shipping for U.S. Domestic customers
Non-VTEC to VTEC Conversion
I am capable of converting USDM & JDM rectangular type NON-VTEC Civic & Integra OBD1 ecu’s into VTEC ECU’s, essentially making them into ‘P28’ ecu. The knock sensor is unsupported with this conversion. The Civic VX P07 ECU with a 1560 board is unsupported. The P05 Civic CX ECU (in stock form) is made to use 1-wire 02 sensor which I will update to support a 4-wire 02 sensor as part of the conversion.
Fee: $35 or $145 if included as part of a full chip job.
Fee includes return shipping for U.S. Domestic customers
Auto to Manual Conversion
Auto ECU’s can be converted to manual eliminating the CEL 19 lock solenoid code if used in a manual vehicle. This is supported for Civic, Integra, and Prelude OBD-1 ecu’s. This conversion works for stock ecu’s too meaning it does not need a re-programming job to become a manual ecu.
Fee: $30 or FREE if doing a full chip job that’s using an auto ecu.
Fee includes return shipping for U.S. Domestic customers
Repair Services: Bench Test, Capacitors, IC17, Burned Q31
Part of the aging OBD1 ECU’s are their onboard capacitors and IC17 chip components that begin to fail. Capacitors are the little round brown vertical cylinders sporadically placed around the main PCB. They can leak over time with varying degrees of staining put on the PCB or they can form a teal colored fuzz build up on their butts and legs. They can also emit a fishy-like smell if you give them a close whiff, particularly when heated up. The IC17 component works in conjunction with some of these caps, specifically fuel pump related caps. IC17 doesn’t show any visible signs of wear or tear (no burning or leaking). In rare cases, the caps + IC17 are sometimes not the culprits in affecting fuel pump operations (which can makes things complicated), but most of the time they are.
If you are experiencing any of the following symptoms, you more than likely have Capacitors and/or IC17 components going bad:
- Late, ultra-late, or no fuel pump priming after ignition ON
- Weird/wonky fuel pump behavior with ambient temps and in-cabin temperature changes
ex: vehicle runs fine on cold start but once warmed up and driven on, weird things happen and the vehicle can be hard to start back up if turned off or will turn back on after waiting about 10mins or so.
A burned “Q31” resistor can happen when the IAT and Evap Purge Solenoid (EPS) are plugged incorrectly to each other. They share the same kind of 2-wire round connector, so its easy to cross them by accident when performing an engine swap in a 92-95 Civic and 94-95 Integra. The end result is Q31 eventually burning itself out and the IAT sensor tip melting. You may or may not get a check engine light (CEL) for the IAT but there is no CEL for the EPS, so its kind of hard to pinpoint. Easiest way is to make sure you have these two connectors installed properly (1) by noting their wire colors to their respective sensor or (2) simply marking/tagging the wires before the engine swap is performed. Sometimes Q31 can get so burnt up it damages the main board. When this happens I cannot repair the board only remove the remnants of Q31. Having Q31 completely removed doesn’t hurt anything either but it may affect emissions since the EPS is an emissions related sensor.
Fee: $85 includes: bench testing, full capacitor replacement, and IC17 replacement.
Add: $15 for replacing a burned Q31 transistor (if repairable)
Fee includes return shipping for U.S. Domestic customers
