HI there,

If I change the stock intake manifold of my LS-T for a skunk2, and change my little intercooler for a bigger one. Do you suggest that i re-tune my setup?

Thank you.

 

Modified by Schister66 at 6:32 PM 12/18/2006

 

The appearent answer is yes, but i think if u dont, ur not going to see the power gains the new parts can offer but still be safe.

 

i would

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schister66 &raquo;</TD></TR><TR><TD CLASS="quote"> no</TD></TR></TABLE>

What sensor on the ECU do you suppose is going to notice the increased VE of the engine and compensate for it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schister66 &raquo;</TD></TR><TR><TD CLASS="quote"> no</TD></TR></TABLE> lmao

 

Modified by Schister66 at 6:32 PM 12/18/2006

 

umm, ok...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">

What sensor on the ECU do you suppose is going to notice the increased VE of the engine and compensate for it?</TD></TR></TABLE>

That would be the super secret cold side VE sensor, as well as the skunk2 IM sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schister66 &raquo;</TD></TR><TR><TD CLASS="quote">need to retune: NO

you're not going to see the power gains from the parts you bought if you dont get a retune, but your car will run just fine without it......i can't imagine a Skunk2 IM is going to change much.....</TD></TR></TABLE>

so you dont think this...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">increased VE of the engine </TD></TR></TABLE>

is going to cause problems with the current tune?

 

Any time you make your air pump (engine) more efficient or efficient in different rpm ranges than before (like a short runner intake manifold), you have to give those same load/rpm points more fuel to maintain the same air/fuel ratio. Very simple, more air in means more fuel needs to go in. An intake manifold WILL change the VE of the motor over all, as well as change the VE curve. An intercooler could change the VE of the motor as well, depending on the two intercoolers being compared. In the end, yes, you should get retuned.

 

i would ask santa for ben stradders efi book

 

That is what I was thinking but just wanted to make sure lol,

Thx a lot guys