~Mike~

iTrader: (2)

Might as well give it up. He's set on it being a plugged cat. Like I said before, the only way it could be the cat is if he plugged it all up and it fell apart and blew out the tailpipe. In which case it would be like a catless dp. I'm guessing it's a boost leak at the intake mani/blower gasket OR the gauge has stopped working properly

Staged07SS

iTrader: (25)

Agreed. These are all very possible.

kyle1853

Start filling up glass site?

And what is your guys negative vac at when idling without ac on?

Redefined1

iTrader: (1)

the site glass is also commonly known as the fill neck

~Mike~

iTrader: (2)

Your vac at idle should be anywhere between 18-21hg w/out ac on. Depends on outside conditions like humidity and temp. Mine usually sits right at 20 most of the time. Ac on and its closer to 15-17. Switch your interceptor to read boost and compare it to what your stock gauge says. In your case that's the easiest check if your boost gauge is misreading for whatever reason

kyle1853

Yeah I know that's what I've been doing, mine is running
like 17 to 18 idling

~Mike~

iTrader: (2)

So your interceptor says 15psi and so does your gauge? Ur only 2 other options are leaky blower/intake mani gasket or belt slip

kyle1853

Well I went to another dealer again today and they order the downpipe and test drove it and everything they said the same thing that my cat is either gutted to the point where I'm loosing boost and power or it clogged to the point where it doesn't have the ability to build the boost and then said if
that didn't take care of it it is more then liking the blades in the blower

~Mike~

iTrader: (2)

*rotors, not blades...and of course they're gonna say its the blower, its more expensive to fix. And if I'm not mistaken, ur out of warranty so its gonna cost ya mucho denero. If it were me in your situation, I would be checking the belt before you go doin blower crap.

JapEatr

iTrader: (9)

i got a blower for sale if interested

Staged07SS

iTrader: (25)

The stealership is def dicking him around .... OP please listen to the advise given to you in this thread.

Dirty25RS

"hmm yeah, its gotta be the cat is clogged (most expensive exhaust component)"

"or if its not that, probably the SC rotors (most expensive intake component)"

yup def sounds like stealership talk to me.

kyle1853

umm ok i am a mechanic and a service advisor at a dealership and i have the connections so no its not dealership talked...and mike i have an 07 same as you remember....still warrantied.....and quit trying to correct me ...you cant even change your own oil....you know what i meant...

Staged07SS

iTrader: (25)

Well if its by some chance a clogged cat you should have no worries, because the stock downpipe has a warrenty period of 10 years 120,000 miles now

kyle1853

when did they change it...cause im pretty sure my cat was warrantied 8/80

and yeah they already said it was pretty bad and ordered it and im getting it installed on friday...did i mention....fooooo free..lol

~Mike~

iTrader: (2)

Ok, for one, don't be a dick. I can change my own oil thank you, I just don't have the tool for the cap on the oil filter. I thought that since we were friends and you DO have the tool that maybe you'd help me out, but no, you want me to buy the oil and filter and then PAY YOU $10 to help me out. Well, for $5 more than you wanna charge me I can just have some other place do it. Oh, and let's not mention all the other times I've come and helped you out in the past FOR FREE....like when you blew ur engine and I came over and put ur stock intake back in cuz you didn't wanna and cuz you thought the dealer woulda voided ur warranty over the injen being in there. So if you don't wanna listen to my advice that's most likely right, fine by me, not my money or car that's fucked up. Don't be callin me next time you **** something up tho. Good luck on a clogged cat causing your boost drop cuz I apparently know nothing about this car at all...s'cuse me while I go read a haynes on how to change my oil.

WickedSS2005

iTrader: (1)

For the record, clogged cats raise boost. Clogged = restriction. More restriction = more "boost". Boost is the measurement of restriction

Then again, I keep forgetting that for a blower car you want to retard timing for more power......

vac lines crack. injector buckets loose their seal. The dealer is stupid

Oh, and if the stock boost gauge and the interceptor read the same, it is because they are BOTH reading the same signal from the PCM. Put a manual on in there and it'll be 100% accurate unless part failure. The PCM is NOT perfect at reading

FYI, a 2.8 pulley SHOULD be making 16-17 psi. Higher, there is a clogged cat. Possibly blew itself out and caused a slight drop because of the loss of the restriction.

BUT all of this has been stated before. If it is refused to be listened to, I can no longer help

SSinPA

so did i read his post correctly? He said he is running stage 2 tune with 2.8 pulley. That being said a 2.8 should boost somewhere of what 18-20psi? Will the state 2 tune bleed boost at anything over the 15psi range, which is what stage 2 should boost to anyway?

WickedSS2005

iTrader: (1)

No. The stage kit is not restricted to PSI. The OEM Stage Tune is set up at 200% for the boost limiter. So, no chance of that happening. The stock file is different and has parameters to bleed off above 12psi.


In the event I am disbelieved tho, you can always plug the vac line and do the boost bypass mod that we all used to do before HPT. That will prevent any boost loss from the bpv.

SSinPA

ok thanks for clearing that up. Quick question though....why would my car limit boost to 7psi

WickedSS2005

iTrader: (1)

It won't. Unless there is SEVERE knock/IAT's noticed in which case it will use one of the fail safe parameters to limit boost in the event of imminent danger. Check for all vac lines to be seated and not cracked

SSinPA

It was raining today and it has been prolly 30k miles since plugs were checked. Could any of these cause that problem. Could it be a fuel problem too. I was getting alot of hesitation and jerkiness today

kyle1853

Mike I'm sorry I'm being a dick to you but you weren't listening and you were down talking me when you know I work on cars all day and it was getting on my last nerve, I have no problem with ever helping you out or changing you oil I just don't like doing it in the cold or the rain if you ever needed anything I would do it just don't down talk me cause it really grinds my gears

WickedSS2005

iTrader: (1)

SSinPA: check the plugs. BKR7E 0.032" gap

SSinPA

BKR7E...is that the iridium or the copper....I don't remember off hand. I have the iridium gapped to 0.033"