The road to Hondata, part 4 (dyno chart!)

[Sonnyballs]

Part 1: http://forums.clubsi.com/ubb/Forum12/HTML/006646.html
Part 2: http://forums.clubsi.com/ubb/Forum12/HTML/007011.html
Part 3: http://forums.clubsi.com/ubb/Forum12/HTML/007051.html

The before and after:


Test conditions:
- 83deg F (read it on the dyno software)
- ~200ft above sea level
- 91 octane gas (Damn, California!)

Car information:
- 2000 Civic Si with 27,000 miles
- Integra Type R head with stock Si cams
- Jackson Racing Supercharger with the 6psi (4.2") pulley
- 3" short ram intake with Comptech ice box
- DC Sports 4-2-1 header
- Stock fuel pump
- 440cc RC Injectors
- AEM FPR
- Hondata Stage 4B with the "Tom Payn JRSC Map"
- Stock cat
- Stock exhaust
- Stock ignition timing (16BTDC)
- Cam gears set at 0,0
- Idle pressure at 34 psi, static at 44 psi, max fuel pressure was 53 psi

Some comments:
1) Lack of an intercooler is a serious problem for our JRSC's. My best number in terms of peak whp was 197 whp and that was done on the first pull when the car was still pretty cool. Max intake air temp was 150 deg F during that run. By the final run, max intake air temp was in the low 180's, so everything was substantially heatsoaked. We guessed that if we let the car cool for an hour and ran it again, it probably would have broke 200whp.

2) On the Hondata run, the a/f looks lean at 3k but that is simply because the Dynojet had already started recording, but Lawrence (the dyno operator) hadn't nailed the gas to the floor yet.

3) The car is fast!

4) Drivability is superb. Transition into boost is super smooth and you get a nice little kick when the ECU switches into open loop operation at 5" vacuum (adjustable).

5) VTEC was set at 5200. We had it as low as 4400, but the engine just did not seem to like it that low.

6) If you buy your Hondata from Tom Payn ( [email protected] ) , you will be given this map. It started out life as a GS-R map and was modified a bit to run on my Si. As you can see, it's a damn good map. A little over and hour of tuning has produced very good results.

7) I've been holding off on an exhaust, but it looks like it may be inevitable at this point. The dyno operator (Lawrence -- a very smart guy, big props to him) estimates that the stock Si exhaust is costing me 7 to 10 whp with the car tuned so well.

8) That's about it. If you've got questions, fire away.

Oh yeah, I'd like to thank Doug @ Hondata for his terrific support when I've needed it, Tom Payn for supplying a kickass base map, my local buddies Zip and t_schoepf for always keeping me laughing, and these message boards for allowing us all to communicate. If I left anyone out, you guys know who you are.

Sonny

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Sonny Van Hook ([email protected])
2000 JRSC'd Civic Si @ 6psi (Powered by Hondata)
1999 Tonykart/Honda 80cc Shifter

[This message has been edited by Sonnyballs (edited September 06, 2001).]

[Vietracer]

Damn nice gains. How much did you Hondata Stage 4 cost and where you got it from? Where did you get this all tune at? Thanks for your help.

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G? ?嚆 ֮ G?? ?嚆!!!

[This message has been edited by Vietracer (edited September 06, 2001).]

[JRCivic]

Sonny,

Call me tomorrow... I want to hear more about your adventures.



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'93 Civic Si H/B with B18C1, JRSC @ 8psi
Best 1320: 12.68 at 110 mph

[randomwalk101]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Vietracer:
Damn nice gains. How much did you Hondata Stage 4 cost and where you got it from? Where did you get this all tune at? Thanks for your help.

<HR></BLOCKQUOTE>

The answer is right under your nose!! Did you read the message?



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It's powered by GASOLINE damnit!!!

[randomwalk101]

Sonny, I thought you bought a Hondata stage 2B. Did you upgraded to stage 4b??

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It's powered by GASOLINE damnit!!!

[Sonnyballs]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by randomwalk101:
Sonny, I thought you bought a Hondata stage 2B. Did you upgraded to stage 4b??

<HR></BLOCKQUOTE>

Yes, I did upgrade to 4B. I didn't need it, but I wanted it and you know how that goes.

So, I do have a 4B which means there is another 4B user in the Hondata community. Any dealer can make changes to your map for you, but now there is also another Hondata user who can do it, too.

Snny

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Sonny Van Hook ([email protected])
2000 JRSC'd Civic Si @ 6psi (Powered by Hondata)
1999 Tonykart/Honda 80cc Shifter

[5 Liter Eater]

Sonny,

Am I correct in saying that you cant change the ROM even with the 4B unless you have a ROM burner? Or am I just smoking crack?

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Bill Winters
Houston, TX
'94 GSR w/ JRSC @ 6 PSI, Cartech FMU, AEM fuel rail and homemade CAI
(ENDYN stepper pully, GS 342 and RC 310's in the garage waiting)

[This message has been edited by 5 Liter Eater (edited September 06, 2001).]

[Sonnyballs]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by 5 Liter Eater:
Sonny,

Am I correct in saying that you cant change the ROM even with the 4B unless you have a ROM burner? Or am I just smoking crack?

<HR></BLOCKQUOTE>

You are correct. You need the programmer to make changes to the chip or tune on the fly. If you buy the programmer, you usually get a flash chip which can be used over and over instead of the standard OTP EPROM which can only be used once.

The programmer comes with the emulator connector. In my car, I've wired the programmer to a constant 12v source. When I want to do in-car tuning, I plug the emulator into chip socket in the ECU. Then I download my current map into the emulator. I start the car, drive around, make some observations, pull over, make a few changes, dump the new changes into the emulator (takes a couple of seconds) and repeat as much as necessary.

When I'm done, I remove the emulator from the ECU and programmer, insert the flash chip into the programmer, write the updated tables to the flash chip (takes about 30 seconds), and then install the flash chip into the ECU.

I plan on doing a writeup on some in-car tuning pretty soon.

Sonny

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Sonny Van Hook ([email protected])
2000 JRSC'd Civic Si @ 6psi (Powered by Hondata)
1999 Tonykart/Honda 80cc Shifter

[dbman96]

Reading that last post makes me want a Haltech even worse.


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[Sonnyballs]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by dbman96:
Reading that last post makes me want a Haltech even worse.


<HR></BLOCKQUOTE>

The in-car programming features of the Hondata are not as easy as some of the other systems, but the software is so easy to use that I think it makes up for it.

I listed a lot of steps, but they are very easy and simple to follow steps that take very little time once you've done it a few times. I haven't used anything other than the Hondata, but I've talked to two very experienced tuners that have used the Speed Pro, the Accel DFI, and the Tec II. They've both said that in terms of ease of use, the Hondata is much better for the average joe (like me).

Sonny


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Sonny Van Hook ([email protected])
2000 JRSC'd Civic Si @ 6psi (Powered by Hondata)
1999 Tonykart/Honda 80cc Shifter

[This message has been edited by Sonnyballs (edited September 06, 2001).]