I finally got the car started, but based on my gauges I need some adjusting.

1. I got the fuel pressure dialed to 45 psi at idle. When I increase RPM's the pressure drops to around 40. Shouldn't it be increasing?

2. At idle my boost gauge is reading -10. Again when I rev the car I'm get about +2 maximum. Is this normal at idle?

Originally posted by HeDog
I finally got the car started, but based on my gauges I need some adjusting. 1. I got the fuel pressure dialed to 45 psi at idle. When I increase RPM's the pressure drops to around 40. Shouldn't it be increasing? 2. At idle my boost gauge is reading -10. Again when I rev the car I'm get about +2 maximum. Is this normal at idle?

1. This is possible due to the fact that a turbo can make your vacuum lower at part throttle than at idle, because of the added backpressure from the turbo. You need to compare air pressure to fuel pressure directly, not throttle position.

2. -10 is not right, unless you have aftermarket cams. It's not enough vacuum. Check for leaks. It's entirely possible to only get 2 psi of boost revving in neutral.



1996 Eclipse RS / 5-Speed / Aerogear Body / Coated in Magnetic Red Metallic rev.2 / T3 Turbo Intercooled @ 8 psi / http://www.team2nr.com
Mark Galyan - Indianapolis, Indiana

Do any timing belt work lately? Your timing is prob off a tooth. When the timing isn't right on, you get low vac, and a choppy idle, but off idle the motor sounds fine.

Checked for boost leak today. Didn't really find any on the install other that at the BOV outlet, but I did find 2 spots where air was coming from. I don't have my Chilton manual here so I can't look up the parts, bare with me. On the left side of the engine, underneath the rubber coupler from the turbo outlet there's a vac line that's connected to a black flat disk, that was the first. The second was underneath that same vac line, and attached to the left side of the engine. It's a silver disk type thing thats perpendicular to the black disk. Those were essentially the only places where I could find air coming out. I played around with the FPR bleeder valve under pressure and that would change as it was unscrewed more. I was putting about 10 psi through the system.

I checked my fuel hose, my stock pump, Accel pump, f'd around with the Cartech regulator. I also looked at the wastegate to see if something was screwed up there. Under 10 psi it moves kind of hard. Not sure if that's normal or not (haven't found anyone asking about the ease of wastegate movement in any forums). I can't figure this out. The only thing I've done to the engine is add the turbo kit, that's it. Everything else is stock, including injectors. I knew I would have to tweak stuff when all was installed, but I'm looking at a brick wall right now.

I shot video of my gauges tonight to try to show you guys what the heck I'm dealing with. Maybe I'm explaining things wrong, but hopefully someone can "enlighten" me as to what to try next.

Here's the link. To see the RPM's it's probably better to have the room dark when watching. I was trying to get some light on it with the camera's light, but it came off darker on screen.

http://c68.115.93.199.roc.mn.charter.com/~heathhartwig/Gauges.mov

Thanks guys. I really appreciate the help that you've given me so far.

HeDog, I remember you from back a long time ago. Do you still have pics of your car? I remember your car looked REALLY good. Could you post some new ones?

Here's a link to some of my shots.

http://www.dsmtuners.com/gallery/showgallery.php?cat=500&ppuser=879

Good to see some "old timers" still here. ;-)

Originally posted by HeDog
Here's a link to some of my shots. http://www.dsmtuners.com/gallery/showgallery.php?cat=500&ppuser=879 Good to see some "old timers" still here. ;-)

Hell yeah man!

Thats what I'm talking about nice car...!}(

Thanks man, It's been a while since I posted on here. But since I added the turbo kit the posts & questions are never ending. Learning a lot though.

The car looks nice, now if I can only get 'er tuned so scooters don't pass me all the time. :)

Originally posted by Eclipse2NR
1. This is possible due to the fact that a turbo can make your vacuum lower at part throttle than at idle, because of the added backpressure from the turbo...

That has nothing to do with a turbo. When you step on the gas a little, and there's no load on the engine, as the RPM's go up the engine will try to suck in more air to no avail, therefore the vacuum pressure gets stronger.

The same thing holds true with aggressive cams - radical cams like to idle a little higher in order to maintain good idle vacuum pressure... This is not only to provide better fuel economy but also to keep good strong vacuum pressure on the brake booster. For example, when my engine is cold the car idles around 1300 and my vacuum pressure is about -30 mmHg, where as around 800 RPM's when the engine is warm the idle is closer to -20 mmHg.

Dude, he's allliiive! Another old schooler reborn! Your car still looks badass! You are the main reason I bought the WW mid wing. Remember the member "97GSAT"?? I am sporting his wang and Mirrors. Your intercooler looks sick btw!!!

It's good to be back. Now instead of the interior/exterior forum, it's the Turbo/Nitrous forum.

Gotta give 'er more power!

I looked at the images of your car. Holy crap! Your engine looks awesome!

:thumbsup

Originally posted by ner947

Originally posted by Eclipse2NR 1. This is possible due to the fact that a turbo can make your vacuum lower at part throttle than at idle, because of the added backpressure from the turbo...

That has nothing to do with a turbo. When you step on the gas a little, and there's no load on the engine, as the RPM's go up the engine will try to suck in more air to no avail, therefore the vacuum pressure gets stronger. The same thing holds true with aggressive cams - radical cams like to idle a little higher in order to maintain good idle vacuum pressure... This is not only to provide better fuel economy but also to keep good strong vacuum pressure on the brake booster. For example, when my engine is cold the car idles around 1300 and my vacuum pressure is about -30 mmHg, where as around 800 RPM's when the engine is warm the idle is closer to -20 mmHg.

I'm not so sure. I immediately noticed the first night I went turbo that my part-throttle vacuum was much lower than before I installed the turbo.


1996 Eclipse RS / 5-Speed / Aerogear Body / Coated in Magnetic Red Metallic rev.2 / T3 Turbo Intercooled @ 8 psi / http://www.team2nr.com
Mark Galyan - Indianapolis, Indiana

Thanks for the compliments on my engine. I am, however, N/A. BTW, Three sweet 2gnts in one post with the WW mid wing, SCHWEET!