Luis@TTP

iTrader: (14)

you dont have to change the turbo to get into the 11s how ever your trap speed is low really low i was running those trap speeds long befor i had meth with just cams and 24 pounds of boost i trapped 112.7 a 12.3 run. with meth and bad tires i recently ran 12.0 at 114 with no traction due to my bald tires. if i was in your shoes i would get rid of those buddy club cams and go with gsc 280s or hks 280s. if you want to do it with 264 272 cams its possible a local evo from orlando trapped 120 on hks 264 272 setup yes that with the green turbo of course but he ran 117 trap speeds befor with the stock turbo.
new cams and forge waste gate actuator and if you feel the boost controller go with a forge with the stiff spring or hallman works great.

kouzman

iTrader: (6)

do what was suggested here!

change the wastegate with the forge unit and preload it enough to keep more boost especially in the midrange... very close to the rev limit it will taper no matter what...

check your dyno sheet also. Do you log your runs? check your shift points according to that. if you are keeping the gears to much probably you are losing time because after a certain point your power drops significantly due to the small duration cams... Get more aggresive cams to keep more power up top...

TTP Engineering

iTrader: (465)

Cams selection, boost controller and HKS SSQV leave much to be desired.

Ditch those parts, degree the cams. We'll assume that Ivey competantly tuned it as he does good work.

Leak test the charge pipes.

MRevolutionRed

i can tell you one thing, the tune isnt the problem as i see ivey as one of the BEST tuners!! but one of my friends had a turbo XS mbc and had the same problem. it was tapering sooo much. the WGA may help but i would get the forge mbc as that worked the best for me. held boost better than the hallman too.

Warrtalon

iTrader: (6)

You keep harping on the boost falling off, but that's just how the stock turbo works. Yeah, you have some crappy parts, but if you made so much power on the dyno, then you should make that power on the drag strip. It doesn't matter if your boost falls off, because it also fell off on the dyno. Where's that 400+ whp when you get off the dyno? That's what you need to find out.

Kee1pride

iTrader: (10)

that wasn't the point. the point was it would hold it better as to not drop all the way to 22. 25-26 would be better than 22 at redline.

Warrtalon

iTrader: (6)

Expecting 25-26psi at redline is not feasible. That's way out of the efficiency range.

TeStUdO

iTrader: (6)

You made over 400hp on the dyno and are only trapping 112? I trap that on my car 22lb's of boost and no alky injection. There has to be something else going on.
Try a boost leak check, change your boost controller, change the pre load on your wastegate. If you do all that and stillonly trap 112, try a boost leak check.

Kee1pride

iTrader: (10)

how do you change the pre load on waste gates?

20psiMR

iTrader: (6)

A 112 trap will not break 11's unless you cut a sick 60' I imagine. Plain and simple answer is: you need more power. Not everyones mods are the same, some can hit 11's on stock turbo, some cant.

TeStUdO

iTrader: (6)

You can tighten it so it opens a little later and holds boost better.

EvoRecordSetter

lol stop saying its cuz your boost drops. thats like saying cuz i have a turbo.

ITS JUST GOING TO BE THAT WAY lol.

anyways, people have told you some parts to change and ITS not cause your boost is dropping cause thats what happens, you cant hold 30 psi to redline.

update us when you change some parts and break into the 11's.

BURNALL_4

iTrader: (16)

that intake cam should be a 272 for starters.....lets see the slip.

EvoRecordSetter

+1 i guess i didnt have to post my previous post cause war covered it here.

DRFTKNGG

iTrader: (8)

My boost is rock steady to redline! Forge WGA helped acomplish this.