Adjusting air to fuel ratio

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Adjusting air to fuel ratio

Postby Huaraches » Mon Oct 12, 2015 3:59 pm

Sup guys i have my tvis deleted on my 2nd gen 3sgte swap on my 184. How should i adjust my air to fuel ratio to compensate for that extra air coming in from the intake.
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Re: Adjusting air to fuel ratio

Postby ___Scott___ » Mon Oct 12, 2015 4:51 pm

Your ECU uses info from your AFM and O2 sensor to calculate the amount of fuel to inject. So, no adjustment is necessary.
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Re: Adjusting air to fuel ratio

Postby alltracman78 » Mon Oct 12, 2015 11:11 pm

If it's a basically stock setup you're not going to see much if any extra air.
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Re: Adjusting air to fuel ratio

Postby underscore » Tue Oct 13, 2015 4:39 am

Why did you delete it? If you have a stock setup all you're doing is losing bottom end.
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Re: Adjusting air to fuel ratio

Postby Huaraches » Fri Oct 23, 2015 12:58 pm

I sorta have stock set up the turbo is a ct27
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Re: Adjusting air to fuel ratio

Postby 88gt4DE » Sun Oct 25, 2015 12:38 pm

Let me tell you about why to delete it ... I will never run that bullshit again after one of the little screws came off a butterfly and destroyed my perfectly rebuilt motor ... :x
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Re: Adjusting air to fuel ratio

Postby underscore » Sun Oct 25, 2015 2:57 pm

Sorry, but isn't that more your fault for not reinstalling the screws correctly? People have collectively done an insane number of miles with that system without a problem.
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Re: Adjusting air to fuel ratio

Postby 88gt4DE » Sun Oct 25, 2015 3:06 pm

underscore wrote:Sorry, but isn't that more your fault for not reinstalling the screws correctly? People have collectively done an insane number of miles with that system without a problem.



I never touched screws. TVIS plate off and right back on ... They are factory stamped on the end and not suppose to be removed or come out. This was apparently an issue that I was not aware of when I did my build ...
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Re: Adjusting air to fuel ratio

Postby underscore » Sun Oct 25, 2015 4:52 pm

Interesting, in that case I'll get my engine build to tack on a little weld on each one to be safe.
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Re: Adjusting air to fuel ratio

Postby 88gt4DE » Sun Oct 25, 2015 5:32 pm

underscore wrote:Interesting, in that case I'll get my engine build to tack on a little weld on each one to be safe.



Good idea if you plan to keep running it. You can see in my build thread the issues it caused. Luckily the forged pistons won the war and wedged them in the head ....
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Re: Adjusting air to fuel ratio

Postby underscore » Sun Oct 25, 2015 10:40 pm

Damn that sucks, any damage to the block?
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Re: Adjusting air to fuel ratio

Postby Huaraches » Tue Oct 27, 2015 1:11 pm

Wow thats crazy never thought they came come off like that
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Re: Adjusting air to fuel ratio

Postby Huaraches » Tue Oct 27, 2015 1:12 pm

If i do put them on again ill have them get welded too
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Re: Adjusting air to fuel ratio

Postby MWP » Tue Oct 27, 2015 3:44 pm

Removing TVIS is a bad idea unless you're in the 400+ whp range.

Good luck welding them... i think you'll find the shaft, plates and screws are all dissimilar metals.
You might be able to braze them. Maybe.

A better idea would be to just give them an extra whack with a punch.
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Re: Adjusting air to fuel ratio

Postby underscore » Tue Oct 27, 2015 7:13 pm

I was thinking more of just tacking a blob onto the end of the screws from the back side, making it impossible for the screws to wiggle their way out, short of actually breaking.
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