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SVTPerformance's Chain of Restaurants
Tuning À la carte
Mechanical Malady or Tuning?
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<blockquote data-quote="Shane's93LX" data-source="post: 15978300" data-attributes="member: 17334"><p>New to tuning and no time with my job to really get to know the language, but hoping someone has encountered similar symptoms and found a solution:</p><p></p><p>Tune is custom and done remotely from a reputable tuner, but he's pretty busy and I think his job is done until I get the other pulley/belt. Setup is '03 with full exhaust, VMP with VMP3000 MAF on the stock unit.</p><p></p><p>Cold start or hot start, the first few minutes of driving registers a rich A/F, like 10.2 - 11.2:1 at idle. Under ANY load where compression starts, the car stumbles, maybe like there's way too much fuel. And if you watch the A/F, as soon as it registers a normal idle A/F like 13.X:1, loaded acceleration is totally normal and without issues.</p><p></p><p>Also, a quick blip of throttle makes the car stumble at any operating temperature, but I hear that's attributable to the GT500 TB (mech link).</p><p></p><p>The check engine light has thrown the following codes several times:</p><p></p><p>P1115: intake air temperature 2 (iat2) ckt high output (super/turbo charged)</p><p>P0148: fuel delivery error</p><p>P2195: 02 sensor signal biased/stuck lean (b1, s1)</p><p></p><p>Maybe just buying new 02 sensors is worth a shot for starters?</p></blockquote><p></p>
[QUOTE="Shane's93LX, post: 15978300, member: 17334"] New to tuning and no time with my job to really get to know the language, but hoping someone has encountered similar symptoms and found a solution: Tune is custom and done remotely from a reputable tuner, but he's pretty busy and I think his job is done until I get the other pulley/belt. Setup is '03 with full exhaust, VMP with VMP3000 MAF on the stock unit. Cold start or hot start, the first few minutes of driving registers a rich A/F, like 10.2 - 11.2:1 at idle. Under ANY load where compression starts, the car stumbles, maybe like there's way too much fuel. And if you watch the A/F, as soon as it registers a normal idle A/F like 13.X:1, loaded acceleration is totally normal and without issues. Also, a quick blip of throttle makes the car stumble at any operating temperature, but I hear that's attributable to the GT500 TB (mech link). The check engine light has thrown the following codes several times: P1115: intake air temperature 2 (iat2) ckt high output (super/turbo charged) P0148: fuel delivery error P2195: 02 sensor signal biased/stuck lean (b1, s1) Maybe just buying new 02 sensors is worth a shot for starters? [/QUOTE]
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SVTPerformance's Chain of Restaurants
Tuning À la carte
Mechanical Malady or Tuning?
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