lil-red-89

Ok so here's the setup-
Dejon upper with tial bov
-unpainted spring
-TTR block off plate
-original vac from bpv ran to the tial
-1 washer spacer

Car will not build boost and throws itself into limp mode and will not dump

I tried T'ing into the vacuum directly off of the manifold and got the same results any help would be appreciated. Tial seems to be a troublesome one to get correct

lil-red-89

Oh car is an 08 with no tune and only other mods are zzp catless dp and Dejon intake

lil-red-89

No one?

Maccoy316

iTrader: (1)

Not being tuned could cause this. Going into limp mode to keep the car from falling apart.

07SSYellow

iTrader: (7)

and the intake is known for problems, so your skewing you fuel trims from the BOV and the Intake, and the catless DP....u really need a tune

whyyoumadson?

correction any intake other then stock is know for problems. you really need a tune to be running what you are... did you get the maf relocated...if you did theres your problem right there

07SSYellow

iTrader: (7)

^^ touche, i just have heard/seen issues with the Dejon one more than others, these cars are very tempermental when u add mods to them without tunes lol

Maccoy316

iTrader: (1)

^^^yup since you're throwing more air into the car than it's tuned for. Tune it quick or go back to stock until you can.

bmain0407

when u put the block off plate on. did u put that rubber piece from the bpv back in? u need to do that. just the spring and the plastic piece u remove

lil-red-89

no i didnt but I will when i get home on the 23rd before I go getting it tuned or anything TY, and thanks guys for the help. I should be able to just run the original vacuum line from the BPV to the new Tial BOV correct ?

Superbalt06

iTrader: (6)

You never want to tee a line to run a bov. You always want that to be alone on one line.

05Slowline

iTrader: (2)

my bov line is t'd to my boost gauge works fine

Superbalt06

iTrader: (6)

Not a good idea. Just because it works doesn't mean it's right. Look into any bov instructions anything you read will tell you a bov needs its own vacuum line.

roadrunner132

Try this try runing the bov in parralel with the bpv. Hook up the bpv normal and then hook the bov to that nipple on the intake manifold with a t on that line. It should be ok to run with no tune at that point.

lil-red-89

I wont be running the car at all without a tune. I am currently in South Korea and will be returning home May 22nd to Ohio, where I'll be installing my new ZZP intercooler and my lower charge pipe and having James-Chevycobaltss3 tune my car before i drive it again at all.

1. new question: taking the original vac line that was going to the orignal BPV, and hooking it ONLY to the new Tial BOV should be the correct way to install the Tial BOV am i correct ?

bmain0407

yea if u block off the bpv put that rubber piece back in so it will build boost cuz i did the same thing didnt put it in and car went to limp mode. then run that line to the tial. u will have a flutter sound cuz the bov wont open quick enough i ordered an 8 psi spring and it still flutters. im gonna order the 6 psi spring and see if that helps. where at in ohio are u located?

05Slowline

iTrader: (2)

meh

Sully20

I want to order a Tial BOV, That's what my tuner recommends, But How do you know which BOV to order(which Tial Brand) and what PSI Spring? I am new to the LNF Platform, Thanks

05Slowline

iTrader: (2)

spring is based off what vacuum you see at idle. bov on stock turbo car is retarded but w/e.

lil-red-89

If you go on Tials webpage they have it broken down look at your boost gauge at idle and it should show vacuum. Match the vacuum you're showing to the chart on Tials webpage for which spring you need for you BOV when you order it