posted here to get more help

went to track yesterday ,take off it would start like at 5lbs and climb to 13lbs at shift point then go down to 7lbs and 9.9 a/f then climb back to 13lbs and 11 af then drop again on the 2-3 shift why is it droping alot of boost , on the street it only drops 2lbs on the 2-3 shift but tires are 25" tall , if i go from 3600 stall to a 4400 would it fix my prob

mods - 6.0 LQ4 - LT'S,PATRIOT STG 2 HEADS , 231/247 617/623 115LSA PATRICK G SPECED CAM , PRO CHARGER D1, 3.6 PULLEY,TRU TRAC WITH 3.73'S ,3600 PI TRIPLE DISK STALL , BUILT 4L60E,

 

it might help if we knew what blower, supporting mods, etc etc.

 

sorry there u go, oh and here is one of the track times of last night

1.883 60ft
5.230
7.990 @ 89mph
12.56@107mph

 

maybe you are getting belt slip which would account for boost loss nto syre about the a/f though

 

Didn't notice those AFR numbers on your other thread. Seems like the tune is also off some. 9.9 is way rich.

 

the boost changes seem totally normal for a procharger set-up and your AFR's are set in your tune

Also are you spraying meth at a constant rate? This would also explain your AFR's.

 

The 3600 stall sounds like a great choice. The drop in boost sounds about right. What are you shifting at? Those partiot springs can handle some high RPM's so you might consider winding it up a little higher to hold the boost.

Like Sharpshooter said, the AFR's are in your tune. Even with a non-progressive Meth kit, your tuner can compensate for the Meth. I imagine dailing in your tune will also make it pull harder which will make the boost recover faster.

It will get there . The D-1SC is a great blower with a ton of potential.

Rick

 

i think i get what u are saying move the controller of meth to start spraying 10% from 0-10 lbs and full from 11-13 right so the af could stay the same along the line right ?

 

6500 so should i move it to like 68-6900 , oh and another q ,is it normal that at the take of my boost would start at 5lbs is that right

 

yes 100% would start around 6lbs im gonna move it to c how it works