62mm throttle body gain

[johnplogii]

Just thought I would post results since I couldn't find any real hard proof by searching. Up until last week I was still running the stock 57-58mm throttle body. Two weeks ago with the stocker at 850 ft DA I ran 6.56 at 106.28 in the eighth, I also ran 106.05. This weekend with the 62mm & no other changes other than 1800-2000 DA I ran 6.55 at 106.49 and 6.58 at 106.71. So I gained a solid 1/2 MPH in the 1/8th mile in worse air. I have read that it won't make any difference on slower cars but it helped on mine.

 

[JoelGN]

Just thought I would post results since I couldn't find any real hard proof by searching. Up until last week I was still running the stock 57-58mm throttle body. Two weeks ago with the stocker at 850 ft DA I ran 6.56 at 106.28 in the eighth, I also ran 106.05. This weekend with the 62mm & no other changes other than 1800-2000 DA I ran 6.55 at 106.49 and 6.58 at 106.71. So I gained a solid 1/2 MPH in the 1/8th mile in worse air. I have read that it won't make any difference on slower cars but it helped on mine.

Two weeks ago: 6.56 @ 106.28 and 106.05
Now w/62mm: 6.55 @ 106.49 and 6.58 @ 106.71
Where was the gain?

 

[Quick6'n'-K.C.]

Would be nice to see what you will gain when the DA is comparable to your previous runs with the stock t-body.

Same boost numbers?

BW :biggrin:

 

[johnplogii]

Two weeks ago: 6.56 @ 106.28 and 106.05
Now w/62mm: 6.55 @ 106.49 and 6.58 @ 106.71
Where was the gain?

The gain is that it ran 1/2 mph faster at 1000 ft higher

Same boost Bryan.

 

[Quick6'n'-K.C.]

Excellent! Im gonna have to bring my GSXTRA magazine to noble for you to autograph for me:biggrin:

BW

 

[VadersV6]

Was the boost exactly the same or did it drop a bit, like I would expect it to do?

 

[johnplogii]

Boost stayed the same. No adjustments necessary.

 

[GNVYUS 1]

Not bad considering is was only the 62mm ported TB.

I am not sure why so many dismiss this mod but ported TB or bigger TB's make more power on these cars.

 

[VadersV6]

If boost would have dropped, that would indicate that the TB was some level of a bottleneck, but it doesnt really seem that way here. I have a 62 TB as well. Bigger TB's are always more fun on the street as they provide more air at less throttle so it makes it feel faster, but I really dont notice any difference between 3/4 throttle and full throttle.