Alfa 1.9jtd16v Problem

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Alfa 1.9jtd16v Problem

Postby qaws » Sun Apr 16, 2017 5:50 pm

Hello i have a tuned alfa 1.9jtd 140hp. Egr is off en fuly decatt. Above 3800rpm i have a overboost problem. What is wrong.
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Re: Alfa 1.9jtd16v Problem

Postby Deman » Mon Apr 17, 2017 7:12 pm

The duration of fuel delivery, from 50mm3, + 25%. This will result in an imbalance in the N75. But N75 is 10% with 50mm3, which helps a little

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Re: Alfa 1.9jtd16v Problem

Postby jtdpow » Tue Apr 18, 2017 11:16 am

I take a look later,do you change turbo error code??

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Re: Alfa 1.9jtd16v Problem

Postby fredvr » Thu Jul 13, 2017 5:52 pm

Sorry to dig up an old post.

But this is to warn Alfa owners, when they totally decat quite often they get turbo creep.

Which induces a limp mode.
Leave your cat in place, the turbo needs that back pressure.

My 2 cents.

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Re: Alfa 1.9jtd16v Problem

Postby jtdpow » Thu Jul 13, 2017 7:21 pm

you dont have boost creep in a remap decatted jtd 16v if you know how to tune vnt maps

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Re: Alfa 1.9jtd16v Problem

Postby fredvr » Thu Jul 13, 2017 8:49 pm

I agree with you Jtdpow, but how many do it?

There is a bit of testing before getting it right.

Is it necessary for a road going car? I doubt it.

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