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Type: Posts; User: ttypecamaro

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    You're probably looking for a memcal with $58A...

    You're probably looking for a memcal with $58A mask code out of a 1227749 ecm. The 7749 is almost interchangable with the 7730. Custom tuning and probably other modifications are required.

    7749...
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    I tried changing the cam timing very similarly to...

    I tried changing the cam timing very similarly to the E85 MPG thread (w/ minor tuning to compensate for fuel trims) and found the DIC estimated mpg increased by 2 mpg (26.5), but the actual fuel...
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    Yesterday I was driving down a long spiril in a...

    Yesterday I was driving down a long spiril in a parking garage just after starting the car. Before I got to the bottom, the E-brake light came on (I checked the e-brake and it was not engaged at...
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    I see the cyl #4 (only) KR often when at cruise...

    I see the cyl #4 (only) KR often when at cruise conditions. I think one source is its picking up drivetrain noise when the load reverses.
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    With stock DALs, 265kPa limits, and the MALT...

    With stock DALs, 265kPa limits, and the MALT jacked up to 100% above 4000rpm, I get a flat 225-230kPa MAP during a WOT pull. I increased the 100% column of the DAL to only 230 above 3000rpm and that...
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    P.I.D. feedback control can be a very complicated...

    P.I.D. feedback control can be a very complicated subject, but the overall objective is to make the actual output follow as closely as possible to the desired output. Each of the three terms...
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    Dunno, I'm too afraid to try it again. ...

    Dunno, I'm too afraid to try it again. Especially now that I no longer have a reason to need the GMS1.
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    What about the Buick GS pump for ethanol...

    What about the Buick GS pump for ethanol mixtures? That car is supposed to be flex-fuel, right?

    I took my cobalt to the track this Wednesday for some tuning and legal fun. The best I could get...
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    Looks like the wastegate feedback control needs...

    Looks like the wastegate feedback control needs adjusted. I would try decreasing the proportional gain in that area.
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    I've noticed the timing dump too. I think it...

    I've noticed the timing dump too. I think it seems to be related to boost/map/load slope. It could be a knock-preventative "feature" similar to tip-in retard.
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    The stock saturn sky table is much different from...

    The stock saturn sky table is much different from the stock cobalt table
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    I just installed the GMS1 OS on my 09 cobalt...

    I just installed the GMS1 OS on my 09 cobalt (with stock map sensors) and changed the linear slope and offset to match the stock sensors. The boost gauge was reading 2 psi with the key in the run...
  13. Can someone show me a stock 3500 Timing table?

    I retro-fit a 3500 top end onto a 3.4L rwd block in an 88 Firebird. I have the timing tuned what I think is fairly well, but I'd like to compare it to the 3500v6 factory settings as a sanity check. ...
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    thank you.

    thank you.
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    clutch position sensor signal is pin 37 light...

    clutch position sensor signal is pin 37 light green wire on the 58 pin connector. Pin 37 on the 96 pin connector is also light green, but is the map sensor signal.
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    IAT fuel correction and Max boost vs rpm

    LNF applications
    I would like IAT fuel correction because I struggle to maintain accurate fueling as the ambient temperature changes. This causes spark knock and reduced fuel economy unless I...
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    My best 1/4 in the Sky completely stock except...

    My best 1/4 in the Sky completely stock except the BSR tune was [email protected] with 1.97sec 60' (18 months ago). I tuned/logged my bone stock 4dr cobalt a few iterations and went to the track last...
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    Is LTFT > |1| ever?

    Is LTFT > |1| ever?
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    notice the comparison log on bottom left. All...

    notice the comparison log on bottom left. All I'm not showing is rpm limits (check their website) and negligable COT modification. If there is anything else it isn't recognized by HPTuners.
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    For the very observant:

    For the very observant:
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    I'm used to the BLM compensating when INT gets...

    I'm used to the BLM compensating when INT gets too far from 128. I guess I'm way behind in the times?!

    I changed the COT and the MAF trim table accordingly. While I was in there I pushed the DAL...
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    no codes. I think it is weird that the STFTs are...

    no codes. I think it is weird that the STFTs are very positive and the LTFTs aren't compensating. first I was wondering if something was wrong with my logging. then wondering if BSR locked the...
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    Datalog of BSR tune .8 LTFT everywhere

    I finally decided to get hp tuners when I bought my second LNF. I've had the BSR tune on my 08 SkyRL for 24000 miles. short and dumb story: I noticed one of my oil cooler lines was seeping oil, so...
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    My "HP Tuner money" has been set aside since...

    My "HP Tuner money" has been set aside since march 2008 waiting for more boost. I almost bit when the 255kPa became possible last year, but didn't because I already had 250kPa. I have been lurking...
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    oh.. not worth the risk for me.

    oh.. not worth the risk for me.
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