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S300 VTEC problems when accelerating, link to .skl and datalog

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Old Jul 20, 2008 | 03:43 PM
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Default S300 VTEC problems when accelerating, link to .skl and datalog

http://hondata.net/forum/viewt...31623
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Old Jul 20, 2008 | 04:46 PM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (MOVE OVER)

The car is an 1998 Integra Type R
AEM short intake
2001 ITR intake cam
Kamikaze header
Gutted Carsound Cat
SMSP exhaust
Hondata Intake Manifold Gasket

When viewing the tables, make sure you tell SManager to Show Boost Tables; I have added in more columns.
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Old Jul 20, 2008 | 05:08 PM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (MOVE OVER)

Are any error codes being thrown ?
Does vtec function normally with another ecu ?
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Old Jul 20, 2008 | 05:36 PM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (mtber)

No error codes at all.
VTEC functions normally on the stock P73 ecu as well as my chipped P28 running a Crome ITR map created by TomData from PGMFI.org...

However, this problem is also present on my S200 running RomEditor 4 with the same Hondata 2001 Integra Type R basemap. It has a horrible throttle tip in bog, so that has been adjusted by 10% if I remember correctly. That doesn't however explain why it is running horrible on the high cam.
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Old Jul 20, 2008 | 07:06 PM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (MOVE OVER)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MOVE OVER &raquo;</TD></TR><TR><TD CLASS="quote">No error codes at all.
VTEC functions normally on the stock P73 ecu as well as my chipped P28 running a Crome ITR map created by TomData from PGMFI.org...

However, this problem is also present on my S200 running RomEditor 4 with the same Hondata 2001 Integra Type R basemap. It has a horrible throttle tip in bog, so that has been adjusted by 10% if I remember correctly. That doesn't however explain why it is running horrible on the high cam.</TD></TR></TABLE>

The issue could simply be in the basemap. Try adding fuel by using the overall fuel trim in the parameters section to see if it resolves your issue. Also check your tps calibration.

Also, I noticed your ignition timing values are VERRRRY high. You might want to back them down until you get the car on the dyno.




Modified by mtber at 11:49 PM 7/20/2008
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Old Jul 20, 2008 | 08:03 PM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (mtber)

Ok.
since I have the lower RPM range running perfect right now, I did not want to mess with it. I did however add 10% fuel to the entire high cam table to see how that does tomorrow.

When you say that my timing is very high, which portions are you talking about, and how would I know that it is too much? I started from the 2001 ITR map supplied by Hondata and have not made changes to timing yet. I took out 2 degrees of timing across the high cam table until I hear something back from you.
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Old Jul 20, 2008 | 08:07 PM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (MOVE OVER)

Your timing map does not look like factory s300 itr calibration values...

You may want to consider taking the car to an experienced hondata tuner or contacting the vendor you purchased the unit from for a calibration from a simular car they have tuned.

Edit, I didn't catch "I have added in more columns.".


Modified by mtber at 1:03 AM 7/21/2008
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Old Jul 20, 2008 | 08:50 PM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (mtber)

How do you figure?
They look identical to me. I added in more columns but that is the only difference.
I did make another change to the table because I am not sure what happened to the last row, so that was added back with original values.

maybe this will make it easier to see; this is what I did.. Show boost tables, then redid the scaling for everything over .5 psi so that it does not show up on the 2d / 3d graph.

If you pick a pressure / rpm from the basemap and then look that up on my map, you will see that the timing values are the same.

Thank you for your help, but I am not going to touch the comment about taking it to a "experienced Hondata dealer / tuner."

The goal here is to resolve all issues / bugs and have the air to fuel pretty much nailed down before I strap it down on the dyno. I will check for timing adjustment needs once on the dynodynamics..... I am not sure about the high cam yet, but I am pretty confident that the low cam has the timing that it needs. There is no pinging, no hesitation, and the throttle response is awesome.
Not to mention that I ran this same timing map on the car previouslly (and dyno'd) with no changes necessary. It made very little extra power with added timing and lost a hair if I took some out.

I will see how it likes the changes I have made tomorrow.
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Old Jul 20, 2008 | 09:02 PM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (MOVE OVER)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MOVE OVER &raquo;</TD></TR><TR><TD CLASS="quote">How do you figure?
They look identical to me. I added in more columns but that is the only difference.
I did make another change to the table because I am not sure what happened to the last row, so that was added back with original values.

maybe this will make it easier to see; this is what I did.. Show boost tables, then redid the scaling for everything over .5 psi so that it does not show up on the 2d / 3d graph.

If you pick a pressure / rpm from the basemap and then look that up on my map, you will see that the timing values are the same.

Thank you for your help, but I am not going to touch the comment about taking it to a "experienced Hondata dealer / tuner."

The goal here is to resolve all issues / bugs and have the air to fuel pretty much nailed down before I strap it down on the dyno. I will check for timing adjustment needs once on the dynodynamics..... I am not sure about the high cam yet, but I am pretty confident that the low cam has the timing that it needs. There is no pinging, no hesitation, and the throttle response is awesome.
Not to mention that I ran this same timing map on the car previouslly (and dyno'd) with no changes necessary. It made very little extra power with added timing and lost a hair if I took some out.

I will see how it likes the changes I have made tomorrow.</TD></TR></TABLE>

I quickly glanced at your .skl file in NA tables view & didn't look at the load collum values.

There is no reason to really rescale the map to 15 colums. Yes you will have a greater load tuning resolution, but its not necessary.

The timing values you have are not what I thought they were lol
That is what I get for talking on the phone & trying to reply to a thread at the same time.

Do your self a favor & calibrate your tps sensor, then smooth out your fuel tables. You may want to try lowering the vtec point as well just to see how it responds by doing so.

What are your a/f ratios when you stay in the full throttle condition at 5700 rpms ?



Modified by mtber at 1:11 AM 7/21/2008
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Old Jul 21, 2008 | 05:11 AM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (mtber)

smanager is logging very lean, but i dont think that is accurate. it seems to be reading back and forth between the low cam table and the high cam table.the afr datalog says it is roughly 17 percent lean. i added 18% but it still reads the same values. i will try and watch my gauge today and see what it shows.

one reason i doubt the logging in smanager is because it feels like it is bouncing off of a rev limiter. after adding 18% it still showed 17% lean in every logged cell.....
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Old Jul 21, 2008 | 02:09 PM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (MOVE OVER)

more datalogs and calibrations uploaded. I am able to keep it in vtec longer now and the VTS and VTP are showing that they are being activated now. I am getting somewhere. I suppose it is possible that my motor likes and insane amount of more fuel than the base calibration while on the high cam profile.
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Old Jul 21, 2008 | 02:32 PM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (MOVE OVER)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MOVE OVER &raquo;</TD></TR><TR><TD CLASS="quote">more datalogs and calibrations uploaded. I am able to keep it in vtec longer now and the VTS and VTP are showing that they are being activated now. I am getting somewhere. I suppose it is possible that my motor likes and insane amount of more fuel than the base calibration while on the high cam profile.</TD></TR></TABLE>

What air fuel ratio are you seeing in high cam ?
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Old Jul 21, 2008 | 02:42 PM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (mtber)

since I richened it up... For as long as I can keep it in vtec it is running really rich, 10's and 11's. then all of a sudden it starts acting up and shows 17 to 19's
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Old Jul 21, 2008 | 02:55 PM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (MOVE OVER)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MOVE OVER &raquo;</TD></TR><TR><TD CLASS="quote">since I richened it up... For as long as I can keep it in vtec it is running really rich, 10's and 11's. then all of a sudden it starts acting up and shows 17 to 19's</TD></TR></TABLE>

Throw a stock gsr or type-r calibration on the s300 and see what happens.
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Old Jul 21, 2008 | 05:19 PM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (mtber)

I did.... Same crap. I am going to test the Map sensor now. That is the only logical explanation I can come up with right now.

I plugged the stock computer back in and it does the same thing as well.
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Old Jul 21, 2008 | 07:31 PM
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Default Re: S300 VTEC problems when accelerating, link to .skl and datalog (MOVE OVER)

I tested voltage at the MAP sensor plug and it is showing 5v as it should.
There is no continuity across the #3 wire and the chassis ground while the 18 plug wire is unplugged, so at least I know the wiring is short free.
I am hoping to use a diagnostic scan tool tomorrow to check the voltage of the sensor through the OBD2 port with the factory ecu installed.

I can't think of any other logical explanation for the manifold showing a drop in pressure while throttle position either stays the same or is increasing.
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