1FSTBRD
Registered User
I'd used the search function to research why boost would be a bit lower than it should--check all vacuum lines, hoses, connection, cracked/ failing rubber hoses, boost gauge line in case it is sending a false reading, etc. Anyways, when I got my SC a few months ago, when you'd pin the gas pedal, it would hit 12 psi, which is what it should be at. Now, at some point, it's hitting about 9.5 to about 10, and I've ruled out the boost gauge, because the car does feel noticeably slower.....it would roast the near balding tires, now it still spins, but not as violently.
I'd put in a double intercooler yesterday, and this is how I'd noticed the boost being lower. Thinking that it may have been a leaky DIC, I put the factory original back on and it was still reading lower. Now, I hadn't checked the boost gauge before I'd done any of these intercooler swaps, but thinking back to it, about maybe 3-4 weeks ago was when the car felt like it had lost a gear or so. I had someone else in the car and the car was slower, but I had the A/C on, so I thought that between the passenger and A/C drawing power, that it was the reason that the car was slower.
I've also checked all the intercooler connections--at the blower, the upper tube, lower tube, etc. All good, because I'd sprayed it with carb cleaner.
The boost actuator solenoid thing, that is working well and freely and it's not stuck or anything.
I'd noticed that my belt isn't as tight from the crankshaft to the jackshaft, and it's just a little bit tighter on the supercharger belt. The jackshaft/ crankshaft belt has much more play in it than the accessory belt. Could this be a reason why it's getting less boost? Also, I'm not sure when the spark plugs were last changed--could a misfire or something like that have any affect on the boost, too? I'm thinking that it could be a tensioner, as well.
Also, the exhaust sounds louder. I may have an exhaust leak. Could this also be a reason why? With less backpressure with an exhaust leak, I'm thinking that it may have some effect on it.
I'd put in a double intercooler yesterday, and this is how I'd noticed the boost being lower. Thinking that it may have been a leaky DIC, I put the factory original back on and it was still reading lower. Now, I hadn't checked the boost gauge before I'd done any of these intercooler swaps, but thinking back to it, about maybe 3-4 weeks ago was when the car felt like it had lost a gear or so. I had someone else in the car and the car was slower, but I had the A/C on, so I thought that between the passenger and A/C drawing power, that it was the reason that the car was slower.
I've also checked all the intercooler connections--at the blower, the upper tube, lower tube, etc. All good, because I'd sprayed it with carb cleaner.
The boost actuator solenoid thing, that is working well and freely and it's not stuck or anything.
I'd noticed that my belt isn't as tight from the crankshaft to the jackshaft, and it's just a little bit tighter on the supercharger belt. The jackshaft/ crankshaft belt has much more play in it than the accessory belt. Could this be a reason why it's getting less boost? Also, I'm not sure when the spark plugs were last changed--could a misfire or something like that have any affect on the boost, too? I'm thinking that it could be a tensioner, as well.
Also, the exhaust sounds louder. I may have an exhaust leak. Could this also be a reason why? With less backpressure with an exhaust leak, I'm thinking that it may have some effect on it.