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Re: cont. AEM vrs hondata. the rumors, the difference, the truth

Yeah, the Hondata has nitrous control and single wire output feature, I meant something else.

Has anyone used the AEM's automapping on a K series yet to verify it's ability? Was there any dyno comparison done versus a manual tune?
 
Re: cont. AEM vrs hondata. the rumors, the difference, the truth

katman said:
you sure can use it. You might need to disable 02 feedback control though.
thanks :up: . does that mean i can't just use my stock wideband o2?
by the way was your cal more geared towards the road course or straight line; meaning was is tune for good mid to high end response or top end hp?
 
Re: cont. AEM vrs hondata. the rumors, the difference, the truth

98specR said:
thanks :up: . does that mean i can't just use my stock wideband o2?
by the way was your cal more geared towards the road course or straight line; meaning was is tune for good mid to high end response or top end hp?
It was tuned for all-round good power through out the power band. VTEC is set at 3400rpm and has some fatty midrange, top end is great too.

Using a factory honda 02 sensor isn't suggested to be used with the EMS; because the stock 02 has inconsistent AFR readings at higher temperature levels (can't handle higher RPM heat ranges and keep consistent readings) because of a lame internal 02 heater, but the factory 02 seems to be ok at cruising levels, which makes sense. The AEM Uego 02 sensor is highly suggested to be used instead.

For the time being, if you're going to run my CAL, I would just disabled the 02 until you get a UEGO 02 sensor. Actually the 02 is disabled by default in our K20 cals.
 
Re: cont. AEM vrs hondata. the rumors, the difference, the truth

cool thanks katman. i really appreciate you taking the time to explain that to me.
k20a cal here i run!!!
 
Discussion starter · #26 ·
Re: cont. AEM vrs hondata. the rumors, the difference, the truth

katman said:
LAPTOP for sure because you need a way of powering the ECU up (through your wire harness).

Oh cool, you dropped a K into Jay's ex RHD DC2 eh? nice!
my cal is located here:
http://forum.aempower.com/bbs/download.php?id=3867
its actually my buddy buck's but the time i have been putting into it i could almost call it mine. ok i need to find a lap top then, thanks for the cal. and thanks for all the info katman!!

i already asked this in another thread, but i want to hear it from katman..... the only o2 i need is the AEM wideband right?
 
Re: cont. AEM vrs hondata. the rumors, the difference, the truth

DWCHKYPMP20 said:
i already asked this in another thread, but i want to hear it from katman..... the only o2 i need is the AEM wideband right?
here's what he told me
katman said:
It was tuned for all-round good power through out the power band. VTEC is set at 3400rpm and has some fatty midrange, top end is great too.

Using a factory honda 02 sensor isn't suggested to be used with the EMS; because the stock 02 has inconsistent AFR readings at higher temperature levels (can't handle higher RPM heat ranges and keep consistent readings) because of a lame internal 02 heater, but the factory 02 seems to be ok at cruising levels, which makes sense. The AEM Uego 02 sensor is highly suggested to be used instead.

For the time being, if you're going to run my CAL, I would just disabled the 02 until you get a UEGO 02 sensor. Actually the 02 is disabled by default in our K20 cals.
 
Discussion starter · #28 ·
Re: cont. AEM vrs hondata. the rumors, the difference, the truth

ok kool i see! thanks let you all know how it goes as i am on my way to the shop from school now!
 
Discussion starter · #30 ·
Re: cont. AEM vrs hondata. the rumors, the difference, the truth

godamn comm. cable, that shit is so old school i didnt have the port on my lap top!~ :(
 
Re: cont. AEM vrs hondata. the rumors, the difference, the truth

i'v ran bolth on my car and prefer the ems %110.

expecialy with the itb's. you can set the scaling up to fit your max and min vacume, insted of working of 3 or 4 rows..
 
Re: cont. AEM vrs hondata. the rumors, the difference, the truth

k20coupedude said:
im kinda scared to use the ems :eek:
tell me about it. i've had an ems for the longest time and it is still brand new in the box; the seriel numder on it is -0002 :up: .
 
Re: cont. AEM vrs hondata. the rumors, the difference, the truth

hey katman were you serious when you said vtec is set at 3400rpm? that is pretty low isn't it; i'd be popping vtec just driving around town.
 
Re: cont. AEM vrs hondata. the rumors, the difference, the truth

Ihave been running an aem ems in one of my cars since late 2000 when it first came out and i am just now starting to actually get my cars driveability down. the first base maps that i had were useless. they were so bad that the car would barely run and when it would allof it's results were very inconsistent. there is ALOT of maps and tuning involved with the aem software and i don't recommend it for even slightly expirienced tuners. you better have yourself an aem program engineer on hand to get that thing right. but thats just my expirience. mybe my stuff is outdated. But i do love my kpro. :up:
 
Discussion starter · #35 ·
Re: cont. AEM vrs hondata. the rumors, the difference, the truth

got the car running! thanks katman for the cal, working good so far. just a few questions.... what is furl preassure supposed to be at and we had a problem with the IAC. when we got it running, it was idleing at like 2600? but i think the IAC is bad. also, katman if you can, where is a pinout of where i am supposed to pin the wires for the WIDEBAND?
 
Re: cont. AEM vrs hondata. the rumors, the difference, the truth

98specR said:
hey katman were you serious when you said vtec is set at 3400rpm? that is pretty low isn't it; i'd be popping vtec just driving around town.
Yes totally serious.
As already mentioned, the reason for the low VTEC x-over point is because power is being made at lower x-over point vs. the stock x-over point.
Load up the K20A cal and take a looksy at the VTEC crossover point. The cal is setup to make good power throughout the whole power band and not for great gas mileage. What I did was made VTEC TPS dependent; ie. if I don't press the gas pedal down more than 30% VTEC will not kick, if i go over 30% of depressing the gas pedel VTEC pops on.


DWCHKYPMP20 said:
got the car running! thanks katman for the cal, working good so far. just a few questions.... what is furl preassure supposed to be at and we had a problem with the IAC. when we got it running, it was idleing at like 2600? but i think the IAC is bad. also, katman if you can, where is a pinout of where i am supposed to pin the wires for the WIDEBAND?
You're welcome.
My fuel pressure was set to about 55psi according to my FPR. You should probably set yours to about 50psi (stock I believe) if you're not running an RCREW PIMP. But you can compensate for fuel pressure by modifying the fuel injector pulse in AEM Pro - ie. add more fuel if your fuel pressure is low or add less if your fuel pressure is high.

No idea why your car is idling at 2600rpm. Is this the first time you started your K20? If so, you may have air in your cooling system and will need to bleed the system (leave rad cap off and let car idle for about 20-30min).

You don't need to wire in an AEM UEGO 02 sensor if you bought a 1070U EMS. The 1070U has onboard UEGO support hence the "U" in 1070U. There's an additional plug on the EMS (to the right ofthe COMS port) to plug the UEGO 02 into. If you don't have a 1070U EMS, then you can't run a UEGO 02 sensor unless you buy/use an AEM AFR gauge or UEGO 02 amplifier.
 
Re: cont. AEM vrs hondata. the rumors, the difference, the truth

hybrid racing said:
Katman,

Do you have a cal for the k24 combo yet?
And there's the #1 reason hondata is the most widely used ECU. They were willing to commit the time to come up with acceptable calibrations for a wide variety of K engines. The tunes that came with the 1070 were laughable, full of holes, and barely would get a motor running. Perhaps they designed it that way as a support network for their dealers, requiring dyno time just to get a stock motor driveable. It seems that Hondata has a better customer service/relation compared to AEM to date as well. All that said, AEM has a more versatile product, they are just falling apart standing behind it for the end user.
 
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