Boost Gauge

Demon_R/T · Post by **Demon_R/T** » Wed Feb 27, 2008 11:58 pm

Me and a buddy swapped in a SRT into his R/T and we hooked up a aftermarket boost gauge. The gauge is reading boost, but it's my understanding that a boost gauge should read vacuum at idle and between shifts. We may not have hooked it up right. Any ideas on how it should be hooked up?

hansken_yo · Post by **hansken_yo** » Thu Feb 28, 2008 10:15 am

If your just running a regular R/T engine without a turbo in it, then you shouldn't be reading any boost at all. It should only fluctuate between vac and 0.

As for where to hook it up... I'm not exactly sure.

Demon_R/T · Post by **Demon_R/T** » Thu Feb 28, 2008 10:28 am

Demon_R/T-4 wrote:Me and a buddy swapped in a SRT into his R/T

We have already swapped in the SRT-4 engine into his car. But the gauge isn't reading vacuum, only boost.

lvlistchif · Post by **lvlistchif** » Thu Feb 28, 2008 1:23 pm

it should be hooked up to his intake manifold vaccum source or off 1 of the lines on the turbo dosent really matter to much honestly but at the turbo would probably read a bit better and sooner but at idle there should be about -17 to -20 vaccum and yes inbetween shifts depending on how quick they are should drop down to vaccum for a little bit untill you get into boost again. if its sitting at 0 at idle then either ur gauage is broken or you have a major boost leak but i doubt boost leak cause ur car would idle like crap to read 0 vac

CrashTeam · Post by **CrashTeam** » Thu Feb 28, 2008 6:26 pm

He is referring to my swap

The lower nipple off the turbo is where we have the boot line running. It seems to read boost coming off the line but that port has no way to show vac. We need to tee it off one of the lines in the intake, just gotta add it to the list of things to do when its warm again...

Everyone this is Justin, he may be buying my swap, please take pitty on him for he has come to us from a world where neon's are crap and Trans ams are gods....

Get your flame throwers ready, its time for a barbecue

hansken_yo · Post by **hansken_yo** » Thu Feb 28, 2008 8:33 pm

Demon_R/T-4 wrote:
Demon_R/T-4 wrote:Me and a buddy swapped in a SRT into his R/T
We have already swapped in the SRT-4 engine into his car. But the gauge isn't reading vacuum, only boost.

I think I was still half asleep at 7am...

Anyway... I had the same problem at first then someone was nice enough to point out my mistake. Sooooooooo, My index finger is pointing to where I connected in at, my pinky is holding the actual line that I tapped into.

BlackRoseRacing · Post by **BlackRoseRacing** » Sun Mar 02, 2008 5:11 pm

there's no check valves on that line? it looks like you have your source mounted to a vacuum port so you should read some type of vacuum signal...

hansken_yo · Post by **hansken_yo** » Mon Mar 03, 2008 1:17 am

BlackRoseRacing wrote:there's no check valves on that line? it looks like you have your source mounted to a vacuum port so you should read some type of vacuum signal...

If you are referring to my pics, I was originally connected to the boost only line, I think the red one.... can't remember. When I was at a SRT meet they were curious of me only reading boost and looked under the hood and said... OH! you need to be connected here... /long story

So I just tapped in as shown.

Demon_R/T · Post by **Demon_R/T** » Tue Mar 04, 2008 12:08 am

Another thing is. My buddy's swapped R/T has a Greddy BOV and a stock wastegate, but I'm(I'm borrowing it at the monent) still hearing compression surge.(I found a post in the turbo section listed BOV Sounds that has a video of compression surge sounds, and this swapped R/T is making the same sound) Any idea of why this is still going on, and what I can do to fix it?

Post by **Diablo0** » Tue Mar 04, 2008 9:12 am

The boost gauge actually connects to the brake booster. I'll snap a pic tonight.

Wenuden · Post by **Wenuden** » Tue Mar 04, 2008 10:28 pm

Demon_R/T wrote:Another thing is. My buddy's swapped R/T has a Greddy BOV and a stock wastegate, but I'm(I'm borrowing it at the monent) still hearing compression surge.(I found a post in the turbo section listed BOV Sounds that has a video of compression surge sounds, and this swapped R/T is making the same sound) Any idea of why this is still going on, and what I can do to fix it?

If the bov is working properly and you're still getting surge, you need to learn how to drive the car properly. That means not boosting before 3k rpm's, no boost at part throttle. The motor doesn't like that stuff.

CrashTeam · Post by **CrashTeam** » Tue Mar 04, 2008 10:34 pm

Im pretty sure the sound is the Intake flutter that dooms all SRT's with metal intakes... The stock wastegate will keep it from over boosting at part throttle. Watch your boost gauge, it doesn't show more then 4 to 5 psi at part throttle which should be ok.

Wenuden · Post by **Wenuden** » Tue Mar 04, 2008 10:46 pm

word. What intake is it? I used to get flutter with my agp (it doesn't do it anymore for some reason??), but neither of my friends with aem get it.

Demon_R/T · Post by **Demon_R/T** » Tue Mar 04, 2008 11:07 pm

the intake is AEM by the way, and I am hearing the flutter

billm0066 · Post by **billm0066** » Wed Mar 05, 2008 12:08 am

Why upgrade the intake on the stock turbo? The stock intake/filter flows plenty of air. Dr who cars runs mid 11's on the stock airbox with stage 3.

Wenuden · Post by **Wenuden** » Wed Mar 05, 2008 12:19 am

I did it because the stock airbox takes up too much room in the engine bay. Plus the agp looks better than stock. You also hear the turbo spool with aftermarket. The stock air box muffles it.

Demon_R/T · Post by **Demon_R/T** » Wed Mar 05, 2008 10:14 am

billm0066 wrote:Why upgrade the intake on the stock turbo? The stock intake/filter flows plenty of air. Dr who cars runs mid 11's on the stock airbox with stage 3.

plus when CrashTeam swapped the engine, he didn't have the stock. And the stock may flow plenty of air, but a CAI will flow better because of the smoother bends and will flow cooler air due to the air filter being in the fender well

Post by **Diablo0** » Wed Mar 05, 2008 10:29 am

FYI, the stock airbox also draws in cold air as the air inlet is located in the fender well.

Demon_R/T · Post by **Demon_R/T** » Wed Mar 05, 2008 10:41 am

ahh, well, learning new things all the time. but 2 outta 3 aint bad

CrashTeam · Post by **CrashTeam** » Wed Mar 05, 2008 10:32 pm

yep its not like i planed on staying stock forever either..

It was just easier to get a CAI from Mpx then trying to source on the forums or junkyard.

It doesnt matter if it gives gains or not really, i like the engine bling factor and the sound inprovments they give and maybe the 1 or 2 hp gain. Im kinda diggin the Mopar CAI that mpx has right now.

Oh well

2GN.ORG

Boost Gauge

Boost Gauge

Re: Boost Gauge

Re: Boost Gauge