Hondata releases the K20A3-Si Civic flash upgrade

[autojive]

MyEverLovin,
It looks to me like the car with the CAI and header still had the stock exhaust making a bottleneck there (someone correct me if I am wrong on this). I would still like to see what would happen to a flashed car with I/H/E.

[02SilverSiHB]

whoa? 140whp is stock? that's the best I've seen yet...seem weird to any of you? But none the less....10hp gain is awsome!

[atl-si]

Originally posted by autojive
MyEverLovin,
It looks to me like the car with the CAI and header still had the stock exhaust making a bottleneck there (someone correct me if I am wrong on this). I would still like to see what would happen to a flashed car with I/H/E.

I was wondering the same too. Oh well, someone will try and let us know. As far as, $600 bucks for 10 hp, I think that is awesome. Time to beg the wife!;)

[myeverlovinsir]

Originally posted by atl-si

Do you have your dyno slip?

Check this

I guess that a flash is really not going to make any diff. for me. Damn! I was hoping to get over the 160hp hump. Guess I'll have to wait for JRSC, or make a decent head swap. :(

[OldSIMan]

Originally posted by 02SilverSiHB
whoa? 140whp is stock? that's the best I've seen yet...seem weird to any of you? But none the less....10hp gain is awsome!

I thought so too, my car baselined at 134hp - peak, 139whp - peak with AEM-CAI, 143whp with CAI and heatshield gasket. If I get another 7hp I'll be at the 150whp mark, which is my target. Should make a decent auto-x'er against those pesky Ford's. :D

[ep3guy]

Hi everyone, I'm An. I'm the one with the intake and header. I think after the exhaust, it'll free up a lot of room for air flow after the header. I think the upgrade is worth it alone for just the higher redline. With the upgrade, it's like your car turned into a beast. :D

Here's a part of my email to Doug.
--
Everything is great. Now that I had a chance to drive around in the streets more, I noticed that there was A LOT more power down low also. I accelerated like how I normally would, but now I end up about 3 cars ahead of the cars behind me. I'm usually with traffic. I don't think the dyno graphs do enough justice.
--

P.S. Shifting at about 8200 on your tach is just...

[2k2SiGuy]

Getting to sixty in second means third is over 90, and probably higher trap speeds in the quarter too......

[sancho61]

Please remember that the stock Si had 87 octane and no CAI; while the reflashed Si had 91 octane, an AEM CAI and the Flash program. Most of the power gains shown on the dino came from the CAI About 7 or 8 HP gain and the 91 octane about 2 HP gain. The flash itself only netted a 1-3 HP gain. What the Flash really gives is a higher 7700 rpm REV limit. This in turn gives better times in 0 to 60 as you do not need to shift to third to reach 60 mph.

[Az02Si]

I just got my ecu back from Hondata TODAY.OMG this is how the car SHOULD HAVE FELT from the factory.I am COMPLETLY STOCK motorwise,and just added the flashed ecu....The car has a damn top end now!And im shifting to 4th at almost 90mph instead of that weak 82-83 crap.Thats what i really missed about my B16...The topend.Sorry but STOCK the k20a3 topend sucks,but trust me,this ecu REALLY woke the car up.It feels like a nice,SMOOTH shift in the powerband,with some nice extra midrange power thrown in for good measure.Something about the sound of out motor approaching 8K that makes me warm and fuzzy inside ;)

[gpt]

I just did a comparison of the Hondata published HP figures for the Si, RSX and RSX-S in various states of tune, please see my chart below. The figures are only approx as I had to copy from the charts provided by Hondata. Looks good but obviously there is still a lot to learn about the K20A3!

[myeverlovinsir]

That is a relatively good rep. of the lay of the land gpt. Just as I was saying before, I am making more hp and tq than a hondata tuned RSX type-s upto 6500 rpm. This is without the hondata flash. Shame, but I find it very hard to justify spending $600 on a higher rev. limit and nothing more. I just spoke with my hondata dealer and hopefully he will have all the necessary tools to make that little rev. limit adjustment and tuning for much less in the future. Unfortunately Hondata's software (inclusion of serial #'s in their flashes) makes that difficult for dealers at this point. Patience did not pay off as I hoped it would in this instance.

[IceD out N CALI]

10hp gain is a pretty respectable gain. good job hondadata-now gotta save save

[S800Racer]

Originally posted by 02SilverSiHB
whoa? 140whp is stock? that's the best I've seen yet...seem weird to any of you? But none the less....10hp gain is awsome!

That's very weird, especially on 87 octane! But different dynos will give different numbers. I also wish Hondata had compared apples to apples and run the stock motor on the same octane as the flashed motor. However, the improvement in the stock motor HP is awesome.

[ChurchAutoTest]

myeverlovinsir,

I think you might not be looking at the whole picture here. Hondata has tested the flash on two cars. The totally stock car picked up 10 hp and pretty convincing gains. When it had the AEM mounted it picked up another 5 hp. If you reversed the order of modifications, the AEM would probably make more and the Hondata less - that's how it usually works, first mod makes the most power.

The car with intake and header picked up almost nothing below 6k except in a couple of places. In fact, even before the flash it was making less torque down low than the totally stock car, and far less than the stock car with flash.

What does this all mean? The answer is, no quite knows for sure. From a sales perspective, Hondata would have probably been better served to just post the stock car, stock car w/flash and stock car w/flash and AEM. But Doug is an honest guy who is interested in informing people - more info is better as far as he is concerned.

For your car, will you see gains? That is an unknown. Well, not quite, you will see gains on the top end, and the extra 800 rpm of rev range will help your acceleration a lot. You'll also see gains below 2000. The question is actually, will you see gains between 2000 and 7000 rpm.

I suspect that the stock exhaust on ep3guy's car may be problematic. I really don't know though. I'm sure he'll be back in for testing when he gets a new one.

That said, keep your eyes and ears open and see what results other people with similar mods as you get with the flash. I think that most will see some nice gains across the board. BTW folks, the dyno graph for Rick's car did not even have an intake, just Hondata and 91 octane. That's why you have to take An's results with a grain of salt, he wasn't producing as much power and torque as expected before the flash.

Best of luck.

SC

Originally posted by myeverlovinsir
That is a relatively good rep. of the lay of the land gpt. Just as I was saying before, I am making more hp and tq than a hondata tuned RSX type-s upto 6500 rpm. This is without the hondata flash. Shame, but I find it very hard to justify spending $600 on a higher rev. limit and nothing more. I just spoke with my hondata dealer and hopefully he will have all the necessary tools to make that little rev. limit adjustment and tuning for much less in the future. Unfortunately Hondata's software (inclusion of serial #'s in their flashes) makes that difficult for dealers at this point. Patience did not pay off as I hoped it would in this instance.

[gpt]

Originally posted by ChurchAutoTest
When it had the AEM mounted it picked up another 5 hp.

Are the results of this dyno published anywhere. I currently have an AEM CAI so this would be my configuration if I got the Hondata flash, so I am very interested.

It seems to me that from my position (currently having an AEM CAI) getting a header would give me similar gains to getting the flash, at least on the dyno and would cost a lot less - but not increase my rev limit, so the dyno would really help me understand exactly what the differences in power are.