specv5150

I know....I know the HX is the red headed step child of the civic. However, I have two kids, pay $1100 in daycare a month and really just want to keep the enigne I have since it is healthy....so NO B, K, H, F, series swaps for me This will be the second time I turbo my HX. The last time I was using the AFC Hack with goo dresults. However I had the notorious headlift, didn't know about ti and ripped everything off thinking I had blown the headgasket.... but it was good, but the turbo was already gone. So I decided to piece together a kit and see what thi s baby can do with more boost. So I will take you HX owners step by step through my journey. Beleive it or not, I get quite a few PM's with people asking me how I turboed an HX like it is impossible.

1st things first..GET RID OF THAT P2N piece of crap ECU.

Being OBD2 (A by the way not B contrary to the belief that ALL 99-00 civic are OBD2B...end soapbox) severly limits your tuning capabilities. I was reading over at pgmfi.org about OBD2 chipping but didnt really want to fool with it. Anyway I decided to use Uberdata and covert to OBD1.

Tools needed:
Wire cutter/stripper
wiring
4-wire oxygen sensor and harness side donor plug
soldering gun (depending on **** you wanna get)
electrical tape/heat shrink/whatever else you want to use to cover that **** up)
helms/chiltons/haynes/ebay CD

Foremost Ihad to find out what wires did what on the 5 wire oxygen and the 4 wire oxygen. The follwoing thread helped me tremendously and would like to thank whomever wrote it
http://info.honda-tech.com/ind...ensor
Alos the ebay CD witht he service manual helped even more. I don't know if it is a scanned Helm's....don't ask don't tell but it worked great

I used the 4wire secondary oxygen sensor for my primary 4wire.

You need re wire 4 wires to make a 4wire run....duh

sensor ground - thermostat hosuing wires
oxygen sensor signal - D7 ECU pinout
heater control ground - A6 ECU pinout
12v switched - #4 fuel injector yel/blk wire

So what I did was:
1)cut 4 wire donor plug from my harness since that bitch wouldnt be used anymore
2)wired donor plug to the respective locations above.
-wht/red wire (colors will be different is you use a different donor plug...for instance I originally planned on using an OBD1 donor plug but decided against it and the wires were a different color) from secondary donor plug to white wire on where the stock 5 wire was located
-grn/blk wire from donor plug to A6 heater ground ECU pinout. I cut a couple inches from the ecu pin to tap for wiring
-sensor gorund to one of the thermostat hosuing wires
-12v switched to the #4 injector yel/blk wire
3)solder all wiring and wrap with electrical tape. Be sure to use shielded wires for the signal wiring. The only wire I didnt solder is the ground and is porbalby why I am throwing a CEL 41 But that will be disabled when I put my turbo basemap chip in the ECU.
4)connect ECU and OBD2A - OBD1 conversion harness
5)clear any codes and fire that bitch up.

The car runs pretty good. Gas mileage is down from the advertised 42mpg of course but my 5wire was bad anyway so my MPG is better. I had the VTEC crossover set at 5500 just like a stock P28. The car feels a little sluggish before VTEC but I have no other expereince to judge it by other than my previous crossover of like 2 or 3000 RPM. The cars pulls like a demon after that. I dont know if it is because I have a full exhaust and intake but I can DEFINATELY FEEL and HEAR VTEC crossover! I am going to play with the crossover and I had it dropped to 2000 on my second chip (good reason to invest in a burner, you can test ideas and hunches without asking and looking like an idiot because I am SURE someone will say "Honda set it there for a reason" blah blah blah).

Overall time should be somewhere around 30 min - 1hour unless you chase some gremlins like I did so it took me a bit longer.

Lessons learned
-your IAT sensor MUST be plugged in or you WILL throw a code 1 (primary oxygen sensor)

Next up will be wiring up my gauges. I made a custom double din gauge pod from ABS plastic. I will be installing
-water temp
-oil pressure
-oil temp (anyone wanna buy this bitch?)
-boost
-egt will be coming soon. as will a wideband, but for now I will run those 4

So more to come tomorrow. I would like to end this thread with me having tuned the car and have it running optimally

BTW this will be the only post with no pics. I will go back and take pis of my work. And future post will have detailed pics

Hapexamendios

now we need pics

.:Swig:.

edit :what he said^^

dh

iTrader: (3)

Hmm, now just need pics!

.:Swig:.

shake sula the mic rula

specv5150

pics coming fellaz. I did this like a month or so ago. The other things will be done now and the camera will be attached to my hip

ophdehEEEzy

bump

fasthatchb18c1

Uberdata is some fun stuff, now all you need is a Ostrich emulator for that real time tunning on the fly and not have to burn chips.

brent_G

putting this in my recent topics

wpotter93

this info is really helpful
i been thinking about turbo vs an engine swap and i cant afford that dang swap

what kinda turbo did you use

any experience with those kits on ebay

grumblemarc

iTrader: (4)

Thread is 6 years old.