I have installed a borla exhaust and a set of short tubes on my wifes 04 5.3 yukon 4x4. I have modded the air box to get the K@N flowing better also. After the headers I noticed a huge drop in torque. Upper RPM power is amazing though. NAy suggestions short of a cam install. The wife is not big on seeing the grocery getter torn downm in the garage. Also has anyone tried a 160 thermostat to keep the clutch fan from robbing to much power? Let me know what you all think.
Need Torque
- Thread starter waite1of4
- Start date
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blueflamed03
Supporting Member
forget changing tstat, thought of swapping gears?
HMFDZ28
Full Access Member
Forget the T-stat.... Did you get a tune after the bolt-ons??? You really shouldnt loose tq with headers providing the correct tune.
blueflamed03
Supporting Member
unless, they are like 1 3/4" primaries.
HokieHigh
Full Access Member
short tube headers are no different than our stock manifolds. waste of money imo
lightninghid
TYF Newbie
i did the edelbrock shortys and felt a huge difference, now i just gotta get around to sending my computer back to get re tuned. After i did the headers and roller rockers i swapped the computer back to stock so the dealer didnt have another hissy fit and clear out another $250 tune, and i didnt notice the difference anymore, so it needs to be adjusted to make up for the add ons.
