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Yep, you're right - i misstated the situation. I had a 2.9 on it when i first noticed the boost drop. I put a 3.1 on it and boost tops at same 15 lbs as the 2.9in. No difference at all.

yes it is down on boost like the title of the post says. It does not sound funny. I did not datalog. I can see it on the gauge! Really just asking if anybody knows how to confirm the bypass is closing completely or if there is some other way it could be bleeding off pressure. thanks!

no, nothing in the intake.

yeah, should have mentioned there is no belt slip. I have Reichard pulley. No dust. Also the bypass actuator does hold vacuum. I put a hand vacuum pump on it. Thansk for suggestions though.

hey, I have a 2.3L whipple on my 03 Cobra and the boost will not build past about 15 lbs. I can feel it's down on power too. I'm getting same boost readings from the analog dash gauge and my AeroForce OBD gauge. I have a 3.1in pulley which should be about 18 lbs. The boost dump actuator is...

Anybody know if there's a way to confirm the bypass valve is closing completely? I've got a 2.3L with the solenoid bypassed running a 2.95 pulley. The lower blower nipple is routed directly to the bypass actuator. Issue is recently my boost has been dropping from about 17.5max to 15.5. I can...

hey, any update on this? I'm having similar issue with my 2.3L. Down on power, boost wont go over 15 or so. Zero change with smaller pulley.

hey, I've got a belt squeak issue on my 03. I tried different belts too. Then I put a straight edge across my crank pulley and found my alternator pulley is about 1/4 in off from the crank. The belt edge rubs on the pulley as it comes off. It's an aftermarket alternator. I shimmed it a...

hey man, i saw a thread where you said you could have upgraded your Mcleod clutch to 26 spline for a couple hundred $. Can you share info? I'm going to change to 26 spline soon. Btw, D&D sells friction disks only for about half the cost of whole kit. Thinking bout that but concerned about...

GONE! thanks!

hey, I just bought a UPR K-member and coilover kit and am having some issues. I've been looking through posts but cant find my exact problem. First, the UPR coilover perch tube is .05 bigger than my KYB struts so it wobbles a bit. I will probably wrap a piece of 24g sheet metal around the...

sold! thanks

Hey, i broke a in intake valve spring on my 03 Cobra. So, during disassembly my mechanic says he found this piece of plastic inside the same cylinder. Not sure if its related to the spring breaking or not but I'd like some ideas on where the plastic might have originated. It had to be...

How to repair a leaking oil cooler So, I’m changing my oil the other day and I see coolant dripping from the oil cooler. After I freak out for a while I dig in and here’s what I find out: First the good news – there are 2 gaskets separating coolant from oil, with a weep hole in the no man’s...

The stock clutch quadrant auto-adjust feature is a real pain that makes shifting difficult especially with a heavy duty clutch. This is cause you can’t fully disengage when the friction point is set so the pedal is too close to the floor. So I came up with this mod to defeat the auto-adjust so...

I had to remove my parking brake return springs and had a hard time re-installing them. I did a lot of searching the web and couldn't find a solution, so finally came up with my own which worked pretty well. Hope this helps some other poor slob who has the misfortune to remove them. Here's...

Got a bad (Bama) tune, ran lean, and now the mechanic tells me an exhaust valve is fried. Did a compression test and leakdown, got blowby. Anyway, looking for input on how many hours or cost estimate for doing a valve job on both heads. Btw, in case you're wondering why I drove it lean, I...

hey, just bought an 03 Cobra a couple weeks ago. 2 days ago overheated. I know the guy I bought it from burped it properly btw. Anyway, let it cool overnight and fire up in the morning. Crossover gets hot, upper radiator too how to touch, pass side of rad warm, driver side cold, thermostat...