Which engine management system is right for me?

[shorty_du_op]

I'm having a terrible time deciding which engine management system to go with. My set up is listed below. Please keep in mind that this is a DAILY DRIVEN, OBD0 car!

1991 Honda CRX DX, JDM ZC DOHC, Apexi Ball Bearing Turbo Kit (5 PSI currently) PG7 ECU.

Looking at boosting 10-12 PSI for everyday driving, and HOPING to reach the 300 WHP mark :twisted:

currently I'm running the Vortech 12:1 FMU. I want to upgrade to something better, more reliable, user friendly, and tunable.

The management systems I've researched so far, and what I know about them are:

Zdyne - Tunable ECU (This system is too expensive for me right now.

Hondata - I don't believe they have a system for my car?

Apexi S-AFC Hack - The S-AFC run with 450cc Injectors. This was the route I was PLANNING on taking, and so far seems like it's the way to go.

Vortec FMU - BLAH!

Would the Apexi S-AFC be suitable for my needs? Are there better systems out there for my car that I missed? I want to hear any and all ideas, even stuff that's "not popular".

[TurboEF9]

::coughcough:: TurboEDIT.

[kommon_sense]

fyi, don't think that the little apexi turbo will hit 300whp. As for engine management, I know squat about obd0.

[TurboEF9]

Heh, it won't matter much... at 10-12psi, he'll come no where NEAR 300whp.

First off, stock rods will give out at about 220hp. Second, you can figure with *good tuning* (meaning with a WBO2 sensor and ecU modificatoin... I.E, TurboEDIT ;) ) you will get about 10hp per psi of boost. 12psi @ 10hp each, = 120hp + your stock 130hp.. 250hp... *at the crank*. Factor in a 3.7% drag coefficient, and you're looking at barely creasting 225whp.

..but accurately gauging hp expectations comes with experience, you'll pick it up.


As for Engine Management, TurboEDIT ( http://www.TurboEDIT.org ) offers all of the featurs of Hondata, FREE. Editing of the fuel and ignition maps, boost tuning, launch control, editing rev limits, VTEC (Yes, even on a PM6), MAP scalars for ITB, 2, and 3bar MAP sensors, datalogging w/ Map Trace, Wide band O2 support, Realtime Programming (So you can tune on the fly while you're driving..) and the list goes on..

Definatly an optimum choice over *ANY* other fuel management system available for OBD0.

..and if we want to talk OBD1, Uberdata ( http://www.ecimulti.org/uberdata ) owns your Engine Management needs with the same features.

[shorty_du_op]

Heh, it won't matter much... at 10-12psi, he'll come no where NEAR 300whp.

First off, stock rods will give out at about 220hp. Second, you can figure with *good tuning* (meaning with a WBO2 sensor and ecU modificatoin... I.E, TurboEDIT ;) ) you will get about 10hp per psi of boost. 12psi @ 10hp each, = 120hp + your stock 130hp.. 250hp... *at the crank*. Factor in a 3.7% drag coefficient, and you're looking at barely creasting 225whp.


I appreciate the info on TurboEdit, I will have to check it out. As far as your other information.... it's worthless. I never said I was running a stock ZC. There are MANY modifications done to this car, and if you would like, I will gladly list them. 300 WHP is my GOAL. Will I hit it... maybe, maybe not, thats why goals are there. The apexi kit has enough "umph" to get me the PSI I want, along with spooling faster.

and one last thing... you can't add HP like that. Otherwise, I'd be up over 300 HP right now :roll:

[kommon_sense]

funny how people ask for help and get pissy when you offer it...

anyways, go dig up the compressor maps on that little apexi turbo.

[TurboEF9]

and one last thing... you can't add HP like that. Otherwise, I'd be up over 300 HP right now :roll:

First off, you didn't mention anything about your setup. You said, "JDM DOHC ZC". You could have thrown, "Built" in front of it, and maybe altered my response a bit, but I doubt it because you obviously know nothing about tuning what so ever.

HP is nothing but a calculated number. Mathmatics. You think a dyno just "guesses" your HP? No, it calculates it based on a few different factors like, Volumetric efficiency, Air Density ratio, CFM, IATs, Gas Law, so on and so forth. This is not the thread to get into it, but we can certainly discuss tuning if you like.

Bottom line here though is, you will not hit 300whp on 12psi. Tuned or not. Plain and simple. And by your arrogant, and childish response, I know you will not be willing to accept help from people who might be able to get you close. You won't get any responses from me about my software unless you change your attitude.

Sheesh, you were planning on using an AFC to push more than 10psi, expecting 300whp on a BUILT JDM DOHC ZC? ...let me know how your ringlands look after your first pull is shut down by your CEL(10).

[hotrex]

man, as ef9 stated, i have a built y7/y8 mini me with a much larger turbo going to be running 16-18psi on turboedit, and i will be very surprised if i can hit 300whp. your turbo will run out of breath. psi means nothing in terms od power output. its the cfms your turbo is flowing.

[TurboEF9]

This is correct. CFM plays the a large part in your ability to produce huge power gains. Which sucks, because there is a trade off. To get a turbo that will produce major CFM at it's peak efficiency point, you need a compressor. However, most production turbos that have big compressors also have big turbines. This means slower spool.

This is why people build mismatched turbos. The most popular is the T3/T4 hybrid. Small turbine for quicker spool, big compressor for huge CFM.

These little pre-fab kits don't push anything. 150-200cfm at 70% efficiency? Give me a break. I could probably get more CFM with a blow dryer.

Anyway, more CFM requires more ignition and more fuel resulting in more power. Plain and simple.

[oscarmayer]

the apexi turbo cannto hit that kind of performance. the max you can make with it is about 245-265 wheel power. it maxes out at about 15-16 lbs of boost but that's beyong it's power range. the best range is about 12-13 lbs. on that turbo.

12 lbs will get you about 225 on your motor.

[oscarmayer]

the turboedit is your best bet. but you'll need a shop to help you get it setup and tuned.