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PostPosted: Thu Jul 29, 2010 6:31 pm 
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Joined: Thu Jul 29, 2010 6:30 pm
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Year and Trim: 1998 Olds LSS Supercharged
I have an 98 LSS with the supercharged engine and was looking for a company or person that can tune or modify the PCM? All the vendors that I have contacted say they can't do it. Is there anyone out there that can?


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PostPosted: Thu Jul 29, 2010 10:20 pm 
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Joined: Mon Mar 30, 2009 11:18 pm
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Location: Zimmerman, MN
Year and Trim: 1998 SSE
What mods do you have? You may want to PM "L67poweredLSS" He has the same car with a few mods. I know he has 3" down pipe and 3.4" pulley for sure. He may have other mods too? Not sure.

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PostPosted: Fri Jul 30, 2010 12:03 am 
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Joined: Mon Jun 15, 2009 12:04 am
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Location: St. Cloud, MN
Year and Trim: 2K1 GTP
You're right. Not really supported, I only have a N/A 97 delta 88 file being relatively close.

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PostPosted: Thu Aug 05, 2010 9:35 am 
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Joined: Thu May 22, 2008 1:05 am
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Year and Trim: 2004 Bonneville GXP
1997 Oldsmobile LSS L67 - SOLD
Only one place does tuning for these cars. You have to get ahold of Ryan at Sinister Performance. That is the ONLY option you have. I had one of them, so I feel your pain!

Thankfully, Ryan is a great guy to deal with.

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95 Oldsmobile 98 L36. 180 degree thermostat. Tru-Cool tranny cooler. Touring Sedan wheels. FE3 springs. Urethane End Links. Magnaflow Cat 94006 -> Soon to be replaced by something that works. WAI. Ported and polished LIM.
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97 Oldsmobile LSS L67 - Stock. For now. - Sold


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 Post subject:
PostPosted: Thu Aug 05, 2010 10:47 am 
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Location: Space Coast, FL
Year and Trim: Now: '97 SSE/'08 Impala SS/'06 Grand Prix SE/GT
Well, not the ONLY option......

An alternative is to take the same year Bonneville file and do an entire write to your PCM, turn off the security, and tune that way. It's the same PCM so it won't be bricked, but the only issue is the PCM will of course think it's in a Bonneville, will have a Bonneville VIN number too. This might not be good if emissions testing sees a different VIN and fails you, so I'd just get a Bonneville PCM and keep your factory PCM to use for emissions only.

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