Boosting issue ?

**kingofqueenz788** · 03-31-2008 07:21 PM

When i drive in stock mode i boost rite up 2 7-8 pounds i put the car in 93 mode on my apr chip and i boost up 2 21 pounds rite away and then i taper down 2 about 15-16 whats up with that ? all of a sudden also. This happened b4 i blew my last set of turbos and i dont want 2 dirve the car untill i fix this problem. Any advise>

**panix73** · 03-31-2008 07:29 PM

$20 says you have a boost leak. Go pressure test the car!

**kingofqueenz788** · 03-31-2008 07:34 PM

thats the thing i pressured tested and cant hear anything. but i kno its leaking some wheir because when i take the compressor hose off and hold the air in the system and look at my boost gague the air is escaping some wheir samco fhose , samco ttb and replaced turbo hoses and dv hoses that connect 2 bipipes. will pressure test again tommorow with sopy water and see what happens.

**RolledMySTi** · 03-31-2008 07:35 PM

Mine does the same with my apr chip. I don't have any boost leaks either.

**kingofqueenz788** · 03-31-2008 07:36 PM

also i was racing a nissan ser in 2nd gear and i didnt pull on him at all must be a boost leak bec that shouldnt happen in stock mode.

**Rajan147** · 03-31-2008 09:23 PM

apr-93 (15-16psi) 18spike
stock (7-8psi) 10psi spike
i know you've heard it before but, make sure your hose are seated and snug, my tbb, lower rear was a tighter fit and had the potential of folding on itself.

Check your DV's (i got an old set of 710A's i think lying around but they are in good condition if you need them while you inspect your other dv's, let me know)

**kingofqueenz788** · 04-01-2008 03:28 PM

thanks im probly gonna just go out n buy some new 710ns but b4 my diverter valve was like shaking while the car was on, i was like wtf so i threw in my old 1 and it stopped. Anywayse im abt 2 purchass a hose kit from ebay and was wondering if anyone had baught 1 of thease b4 and how long did it take 2 get from china.

**Rajan147** · 04-01-2008 03:36 PM

there is a thread on the ebay hose kit in the regular b5s4/rs4 forum, answers a lot of questions.

**exorcet** · 04-02-2008 10:18 PM

Originally Posted by kingofqueenz788

thanks im probly gonna just go out n buy some new 710ns but b4 my diverter valve was like shaking while the car was on, i was like wtf so i threw in my old 1 and it stopped. Anywayse im abt 2 purchass a hose kit from ebay and was wondering if anyone had baught 1 of thease b4 and how long did it take 2 get from china.

it only took like 3 days for me (i'm in Cali). I have the Zena kit minus TBB and F-hose if you want those hoses... pm me unless you need the entire kit (a lot of people already have a TBB or upgraded f-hose).

**The_Jerbel** · 04-02-2008 11:38 PM

Well, check for boost leaks, cuz that never hurts, but it sounds like your K03's are behaving perfectly normally to me.

EDIT: if you are running APR, then you're probably not using an MBC, so it sounds like maybe you are overboosting a little. Try logging block 115 and post it. May be time for a new N75.