Rep Power: 0

i was wondering how good the stock ecu on the ek civic d16y8 was at adjusting. what i mean is im getting a turbo and only plan on running about 5-7 lbs on it till i get all my forged internals and what not. but what i was wondering putting the turbo on and not tuning it or anything, does the stock ecu know enough to correct the air to fuel mixture enough that it won't run too lean? if i were to put in bigger injectors and fuel pump would that help out if the computer wasn't good enough to auto correct? i know that edelbrock makes that turbo kit for stock application that runs 5lbs and it doesn't mention anything about having a ecu or piggyback of any kind. i eventually plan on adding hondata but until then i wanted to know what sort of effect it would have on my motor to just run a turbo at about that poundage untuned.

 
Rep Power: 285

Any turbo set-up requires an EMS system and tune, it's not something you can skip by running low boost and hoping the ecu can learn a new map on its own. If your on a budget just tune on chrome until the you can afford a better system like neptune or hondata. Neptune is the best EMS out there IMO.

 
Rep Power: 0

hmm... i haven't heard about neptune or chrome. how does neptune differ from hondata and what is chrome exactly? do you have to make any modifications to your ecu?

 
Rep Power: 0

and where are some good places that i can purchase/research up on neptune and chrome. even hondata? i know a few places for hondata but not much.

 
Rep Power: 285

Neptune and chrome are both ECU tuning chips, you do need to modify the ECU. Chrome is garbage to be honest, but it's cheap and basically every tuner is very familiar with it so you can make good progress with it quickly while sitting on the dyno. Neptune has a massive number of tuning options and has some cool accessories that go along with it, if they offered it for K-series engines I would go with it in a heart beat.

 
Rep Power: 285

I would probably just hit up google for info on neptune or chrome, since very few people actually work with tuning software outside of professional dyno tuners there isn't a lot of discussion on most forums about it.

I know the creator of Neptune is on H-T, so search there are you'll find he's weighed in on most threads about it.

 
Rep Power: 0

ya i was actually checking it out a bit and it appears to be just as good as hondata and for less $, which is always a good thing. it seems like you can't go wrong with either except for the fact that not too many people know how to tune neptune. according to that h-t site, the neptune rtp is pretty user friendly and anyone should be able to tune with it and there are software tutorials for in as well. One other question i had is just to make sure but the ecu in my 97 d16 should be a p28 chip right? and i would need the obd2 to obd1 conversion harness for it. why does it have to be converted to obd1 is the real question that i have?

 
Rep Power: 285

Chrome is really junk, it works, but there are some major limitations that can lead to problems. It has no safety cut-off options built into the program like hondata and neptune for example.

OBD1 is an entirely different system from OBD2, there are a few reasons why OBD1 is preferred for tuning. Mainly OBD2 has a bunch of emissions stuff added to it, making it more difficult to work with and restrictive, but I've also heard that OBD1 responds to changes in the engine more quickly since it's not reading as much sensor data. The conversion is no big deal, you can do it an hour; many people do it annually for emissions testing.

 
Rep Power: 0

so by adding one of those obd1 to 2 conversions will my car still pass emissions? will it throw any check engine lights?

 
Rep Power: 285

It won't throw a CEL, but you it also won't pass emissions with 0BD1.

The swap only takes an hour hour though so just save your old parts and convert back to obd2 temporarily for the test.

 
Rep Power: 0

just curious, if i do build the car out for boost and change change all the fuel and everything, won't putting the stock ecu back in make it throw a check engine light?

 
Rep Power: 285

I think as long as you have the secondary 02 sensor your fine. Hit up google for the various solutions to emissions testing out there, it's been discussed a million times and although I'm good, I don't know it all.

 
Rep Power: 0

hey, do you by chance know the model number of the d16y8 manual tranny for 96-00ex?

 
Rep Power: 0

It should be an s40 b000 right?

 
Rep Power: 0

if its the same manual tranny as my D16Y5 i can get you the model number tomorrow.. but we need to find out if its the same tranny...