TurboHatchB16

First off let me tell you im am seriously new to this. im building a ls/vtec in a 90 civic hatch. type r pistons, lil head work, nothing big. im putting together a turbo kit to put on it. i was wondering if i should use a FMU or a retuned ecu? what are the pros and cons of each. i dont plan on running anymore then 8-10 psi. the kits has got most of the goodies for a monster setup but the budget wont allow it right now. so far there is 450cc injectors, 255 lph fuel pump, cast mani, universal catch can, 35mm wastegate, turbo timer, bov, MBC, FMIC with pipe kit, and a aem high flow fuel rail. any advice would be greatly appreciated. i do know i need a downpipe just havent gotten around the getting one. like i said, any help appriciated, doing the build myself and dont wanna mess things up. its the only daily driver i got.

tony413

buy a chipped ECU and get the car tuned correctly. you will be happier and its safer

TurboHatchB16

so buy a chipped ecu? i got someone who is gonna sell me a p28 (not chipped) for pretty cheap. i heard it was the easiest to retune. true?

093turbo16

iTrader: (2)

The P28 is a pretty general ecu and can be used for just about any engine combination out there.

So it is definitely a good idea if you don't already have one.

But since you car is OBD0, you will also want to convert the car over to OBD1. This is done with an OBD0 to OBD1 conversion harness, OBD1/OBD2 distributor and a 4-wire o2 sensor.

Next step is to get the ecu chipped or contact a local tuner that can help you setup a solution for your engine management needs.

TurboHatchB16

well the car already had the motor in and was running nos b4 i got it. but he sprayed too long an melted the piston. motor as been rebuilt an everything is good. but i dont have a clue what kind of ecu is in it.

Muckman

iTrader: (2)

Post up a pics of the part number sticker, we can tell you.

ahobbs

this is awesome, a info forum actually giving info instead of people saying search. some newbies dont know how to search

i noticed u said 450cc injectors, what kind? are they dsm's"

TurboHatchB16

i did search thank you, just didnt find a straight forward answer. i know they both work just wanted to know which is better.

o and yea they are dsm's.i was told 450cc was enough for 8-10 psi. i can aquire a set of 560cc if needed.

TurboHatchB16

o i went digging finally(kinda lazy) and it is a pm6 ecu. good or bad? can it be retuned like the p28? trying to save money. im wanting to build a serious project but keep food in my kids mouthes.

ahobbs

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboHatchB16 &raquo;</TD></TR><TR><TD CLASS="quote">
o and yea they are dsm's.i was told 450cc was enough for 8-10 psi. i can aquire a set of 560cc if needed.</TD></TR></TABLE>

if they are dsm's you cant use that with the hondata program. they may work with another type program.

093turbo16

iTrader: (2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboHatchB16 &raquo;</TD></TR><TR><TD CLASS="quote">o i went digging finally(kinda lazy) and it is a pm6 ecu. good or bad? can it be retuned like the p28? trying to save money. im wanting to build a serious project but keep food in my kids mouthes. </TD></TR></TABLE>

For the setup your are building.. please please save yourself the hassle and get a chipped P28 ecu and an OBD0 to OBD1 conversion harness.

It will run the car a lot better than the OBD0 counterpart. It isn't all that much considering it will keep your motor running strong and will also make it last if tuned properly.

Engine management is something you do not want to guess at, it is a do it right the first time around sort of thing.

Or you will be replacing more than just the PM6 next time around.

Muckman

iTrader: (2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboHatchB16 &raquo;</TD></TR><TR><TD CLASS="quote">i did search thank you, just didnt find a straight forward answer. </TD></TR></TABLE>

You mis understood what he said. And I agree 100% with 93turbo16. Your tuning options are so much better with OBD1.

0mtber

iTrader: (2)

https://honda-tech.com/zerothread?id=1544043 will break it all down for you

TehGhett0P1mp

Did you even do any type of research to see what each one even is? After finding out what they do the answer should be pretty clear, but to keep it short an programmable ecu is ALWAYS better than a fmu..not that fmus dont work its just ecus are better!

ahobbs

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Muckman &raquo;</TD></TR><TR><TD CLASS="quote">

You mis understood what he said. </TD></TR></TABLE>

thanks

TurboHatchB16

sorry about misunderstanding you. so i guess a p28 with a obd0 to obd1 is what i need? my brothers friend knows how to use i belive he said it was "chrome." would tht work? othen then the p28, my turbo setup is pretty much done right? wanna do this right the first time around.

o and i forgot to mention the turbo, its a t3/t4 .50 a/r compressor housing, .67 a/r turbine housing, .57 trim wheel. keep in mind i only wanna run 8-10 psi, is this a good turbo?


Modified by TurboHatchB16 at 12:57 AM 8/1/2008

ahobbs

yes on all your questions. from what i read unless i missed something.

ive never used chrome but seems pretty easy from what ive been told

EDIT: Just did some resaerch, seems similar to hondata as i expected, i like hondata just becuase im used to it and know where all the buttons are....lol gl w/ your set up


Modified by HybridcivicLS-T at 10:06 AM 8/1/2008

pcguy760

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboHatchB16 &raquo;</TD></TR><TR><TD CLASS="quote">sorry about misunderstanding you. so i guess a p28 with a obd0 to obd1 is what i need? my brothers friend knows how to use i belive he said it was "chrome." would tht work? othen then the p28, my turbo setup is pretty much done right? wanna do this right the first time around.

o and i forgot to mention the turbo, its a t3/t4 .50 a/r compressor housing, .67 a/r turbine housing, .57 trim wheel. keep in mind i only wanna run 8-10 psi, is this a good turbo?


Modified by TurboHatchB16 at 12:57 AM 8/1/2008</TD></TR></TABLE>

Before you go any further, what brand turbo, wastegate, manifold, etc. are you using?? Remember that on critical turbo parts you DO NOT want to get off brand Ebay stuff!! FEW people have had luck with them but MOST ended up destroying the turbo kit if not the entire motor because of the Ebay turbo stuff.I myself am currently working on my turbo project and I could have been long over and done with it if I went Ebay BUT I decided to take a little more time and put together a quality setup.

Oh and btw, CROME is GREAT in my opinion. Good luck and remember "Do it right or don't do it all"

black_EM1

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboHatchB16 &raquo;</TD></TR><TR><TD CLASS="quote">sorry about misunderstanding you. so i guess a p28 with a obd0 to obd1 is what i need? my brothers friend knows how to use i belive he said it was "chrome." would tht work? othen then the p28, my turbo setup is pretty much done right? wanna do this right the first time around.

o and i forgot to mention the turbo, its a t3/t4 .50 a/r compressor housing, .67 a/r turbine housing, .57 trim wheel. keep in mind i only wanna run 8-10 psi, is this a good turbo?


Modified by TurboHatchB16 at 12:57 AM 8/1/2008</TD></TR></TABLE>

So which pistons are you using again? Please tell me they're not CTRs.

TurboHatchB16

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by black_EM1 &raquo;</TD></TR><TR><TD CLASS="quote">

So which pistons are you using again? Please tell me they're not CTRs.</TD></TR></TABLE>

yea did some more digging, i dont think i will be able to go turbo without replacing some stuff. its got ctr pistons and the heads been shaved .020 with a mild port and polish. so much for turbo huh?

HiProfile

Well maybe you still can - with a smaller turbo and 2-4psi. Which is then an absolute waste.

You could maybe use 5-8psi with a larger turbo if you got it professionally tuned on a dyno. Your 13:1 CR motor is going to be very prone to detonation, which hurts power far more than just turning down boost.

If you were to stop posting and started reading the main links in the FAQ of this sub-forum, you'd have 97% of your questions answered.

TurboHatchB16

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HiProfile &raquo;</TD></TR><TR><TD CLASS="quote">Well maybe you still can - with a smaller turbo and 2-4psi. Which is then an absolute waste.

You could maybe use 5-8psi with a larger turbo if you got it professionally tuned on a dyno. Your 13:1 CR motor is going to be very prone to detonation, which hurts power far more than just turning down boost.[/B]</TD></TR></TABLE>

so basically until i put new pistons and rods in it, turbo is out of the question. apriciate the info fellas