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1/4 Mile Times Before And After Tune


poopnewton

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I've read a lot people talking about what a difference a tune makes. Does anybody have actual 1/4 mile times with mph on their trunk going from a stock tune to a vendor tune with no other changes to their truck but the tune. Looking for trucks that are mostly stock. All I have is a CAI and different muffler.

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I know someone was pulling a 14.2 (or another tenth second) with a cai, flowmasters and 160 stat. Although I wouldnt recomended changing the t-stat, maybe to a 180 if your f/i or spraying... :chevrolet:

Why wouldnt you change the thermostat?

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I changed mine back in 07 to a 160 no probs what so every. Drove it on some really cold mornings up in north fl 17 a few days and lots in the 20's and was still fine.

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For a stock truck, look to gain up to .4 on the high side and .15 on the low side...IMHO with all running conditions being the same.

 

 

Back to Subject . Anybody got some actual numbers for their truck with factory tune and after a vendor tune.

 

Are you doubting what Kevin said?

 

 

Stock 4/3/05

60 2.144

330 6.152

1/8 9.514 @ 73mph

1000 12.465

1320 15.010 @ 88.46

 

pcm for less tune, stock truck 4/13/05

60 2.141

330 6.062

1/8 9.322 @76

1000 12.131

1320 14.542 @93.04

 

pcm for less tune with(i think) CAI, ram air, under drive pulley 4/1/06

 

60 2.027

330 5.85

1/8 9.074 @76.38

1000 11.899

1320 14.340 @ 92.06

 

zippy tune with same mods as above 4/22/06, out of state track, route66

60 2.096

330 5.950

1/8 9.174 @76.59

1000 11.962

1320 14.355 @ 94.04

Edited by shadowsniper3006 (see edit history)
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Are you doubting what Kevin said?

 

 

Stock 4/3/05

60 2.144

330 6.152

1/8 9.514 @ 73mph

1000 12.465

1320 15.010 @ 88.46

 

pcm for less tune, stock truck 4/13/05

60 2.141

330 6.062

1/8 9.322 @76

1000 12.131

1320 14.542 @93.04

 

pcm for less tune with(i think) CAI, ram air, under drive pulley 4/1/06

 

60 2.027

330 5.85

1/8 9.074 @76.38

1000 11.899

1320 14.340 @ 92.06

 

zippy tune with same mods as above 4/22/06, out of state track, route66

60 2.096

330 5.950

1/8 9.174 @76.59

1000 11.962

1320 14.355 @ 94.04

 

 

Not doubting him but wanted to see real numbers with the mph difference. The fact that you added 60' times was really nice. Not that I am drag racing expert but at least I've been to the track enough to know that the easiest way to lower a et is by cutting down your 60' and that your mph is all about your hp. If all I got out of a tune was a .15 quicker et and the mph didn't really change I'd say it wasn't worth it. The 5 or 6 mph you got shows you got some horsepower out of it too.

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Not doubting him but wanted to see real numbers with the mph difference. The fact that you added 60' times was really nice. Not that I am drag racing expert but at least I've been to the track enough to know that the easiest way to lower a et is by cutting down your 60' and that your mph is all about your hp. If all I got out of a tune was a .15 quicker et and the mph didn't really change I'd say it wasn't worth it. The 5 or 6 mph you got shows you got some horsepower out of it too.

 

 

I'll be dyno testing my 1500 hd(6l with 80e) with a stock tune and zippy tune back to back shortly to prove out hp gain. I estimate 20-30 hp with no mods to truck.

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