just installed boost gauge, only 5 lbs, now what?
08-20-02, 05:50 PM
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just installed boost gauge, only 5 lbs, now what?
Just purchased my FD about four weeks ago and finally got my boost gauge in the mail today. Followed "Lightning in a world of thunder" website as to how to connect everything, and seemed to be working fine on startup. But when I took it for a drive, my boost pattern was only 5-2-5. Could I have installed it incorrectly, or what might be the problem. Any ideas.
By the way, it is a '93 with 56,000 miles on it. Runs fine, and until I installed the boost gauge I had no idea that something might be wrong.
By the way, it is a '93 with 56,000 miles on it. Runs fine, and until I installed the boost gauge I had no idea that something might be wrong.
08-20-02, 06:56 PM
#2
sounds exactly like a vacuum line somewhere is loose. dont be too worried, its just going to be a beast to find the line, but you will notice it if you see it. get a flashlight, and take your best look..you might have to take some minor stuff off to see better like the air pump, alternator and intercooler pipes. you will probably notice a stiff rubber line not connected to anything, now just find its connect spot. good luck.
my experience was a full 11.5-12 lbs boost very briefly then nothing over 6 lbs with both turbos kickin. i found the hose filter that just came loose off of the black box above and behind the alternator w/ 2 lines going in. easy fix in my case. again, good luck, let us know.
my experience was a full 11.5-12 lbs boost very briefly then nothing over 6 lbs with both turbos kickin. i found the hose filter that just came loose off of the black box above and behind the alternator w/ 2 lines going in. easy fix in my case. again, good luck, let us know.
08-20-02, 07:20 PM
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By any chance was the car completely warmed up before you checked your boost readings ? ? ? Sounds to me like you may have been boosting on a cold engine, surprised you got any thing on the secondary as you need 7 psi. for the second turbo to come on line.
08-20-02, 11:57 PM
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As far as I know, it is original engine. I've only had it for about four weeks so I don't know what 10 lbs of boost should be like. Do you think I might just have a leak in one of my connections running to the gauge? Engine wasn't cold when running, I usually do atleast 5 to ten minutes of easy driving before I boost hard. Just took it out again and the boost pattern was only 5-2-4. If I'm just cruising in fourth and I get up on it, it will jump to almost six, then decline down to four. My downpipe comes in tomorrow so I will be installing it this weekend, any other ideas on what I should do, look for when I'm working on it this weekend. Thanks in advance.
08-21-02, 08:44 AM
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Im gonna guess and say you still have stock rubber hoses under the hood. Save yourself the headache of looking for loose vacuum lines on one of the 60+ vacum lines and just perform the one time big headache of vacuum line replacement with silicone hoses.
