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Old 02-29-2016, 08:31 PM
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Tuning help needed

Still in the process of making a functional tune for my heavily modded 14 SRT. Forged stroker 426 with single 76mm turbo. Tuning issue for it is a large stutter or cutout right around the vacuum/boost transition. Feels like fuel getting cut at this point. Anyone else with a similar boosted build on a stroker in 14 srt with similar experience and/or suggestions?

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Old 03-01-2016, 05:18 AM
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Re: Tuning help needed

What readings are you getting from the MAP sensor during the vacuum to boost transition? Are the OE MAP sensors capable of working with a positive or negative pressure?
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Old 03-24-2016, 01:08 PM
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Re: Tuning help needed

If you want to send me the tunefile and log I can take a look at it..
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Old 03-24-2016, 05:50 PM
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Re: Tuning help needed

Appreciate the response, but we figured out the issue a few days ago. Seems the factory setting in the PE page for WOT fueling slope was too high. We set it lower and the problem disappeared. New problem though, when its running, the 76mm turbo is now too small to provide enough boost for the 104 octane tune. Have to replace it with 88mm turbo next week :/
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Old 03-24-2016, 06:30 PM
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Re: Tuning help needed

Quote:
Originally Posted by C13Moridin View Post
Appreciate the response, but we figured out the issue a few days ago. Seems the factory setting in the PE page for WOT fueling slope was too high. We set it lower and the problem disappeared. New problem though, when its running, the 76mm turbo is now too small to provide enough boost for the 104 octane tune. Have to replace it with 88mm turbo next week :/
What turbine housing and turbo are you using? I believe we have a gtx5518 with tial housing at the shop that is not being used. Its an 88.5 pro mod turbo basically
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