only running 3 pounds of boost... yes, three! i was told that this is what it was at and will stay at until my e-01 comes in, and it gets dialed in to 6 pounds

any feedback on the above???

so... anyway, it dynoed in at 303 rwhp at 3lbs at 5000 ft altitude!
i was impressed... so i'm estimated that 6pounds should produce around 360-370 at the wheels, even at this altitude.

It is fun to drive, sounds good, I'm excited to see what 6lbs drives like!

 

Congrats, not sure how they can control what boost it is at, it should be around 5.5 unless the altitude causes it to be at 3

 

i don't understand how that works, but they said it was exactly at 3 lbs... i think they said the altitude did keep it at 3???

anyway, i just got back from a drive... it is definately more fun with the turbos!!! ... and i'm sure 6 pounds is way more fun than 3.

question for all:
what is the standard rate for labor to drop the motor... in order to build the bottom end?

i have the ballpark for cost of pistons/rods...but what is the typical labor? How long time wise?
THANKS

 

oh yeah...bone stock at 5000 ft, dynoed at 232... and again, w/ 3 pounds dynoed at 297 (not 303, i was looking at the wrong chart)

so, a 65 hp gain, isn't 22 hp per pound pretty damn good?!

torque was 221 stock...284 w/ 3 lbs boost (63 torque gain=good)

 

Id be upset if i only got 65 hp gain after dropping almost $6k for tthe turbo kit. Something does not sound right here but im no expert when it comes to high altitude levels.

 

i'd be upset too if i wasnt turning up the boost 3 more pounds when the e-01 gets installed... but as i was saying, i was impressed that 3 lbs made that much of a difference, certainly im not gonna keep it only at 3 lbs...!!!

 

maybe i am thinking wierd since i just woke up... but i dont think that your altitude should cause you to only get 3 pounds of boost. i bet they forgot to put in the wastegate valve seals or something.

-charles

 

Something is wrong here. You should still be boosting at least 5psi with this kit, regadless of altitude. The altitude does not change the boost level.

Maybe they routing the vaccum lines incorrectly, or you have a common wastegate leak. How much vacuum do you have at idle? Should be about 20mmHG.

 

couldnt tell you, i dont have any guages in yet... will have the profec in about 10 days... how does a tuner measure the boost?

just hook up a temporary gage and see what its at?

 

It may very well be fine. High altitude doesn't affect turbo cars as much. The wastegates are set for, say, 5.5 psi it sounds like on this kit. That means the wastegates will allow 5.5 psi of relative boost. If you look at a boost gauge hooked up to the car, it may say 5.5 (or different, depending on where you tapped for it). You were probably looking at the dyno's boost gauge which is an absolute sensor. That will read lower due to the loss in atmospheric pressure. <shrug> Not to say that's the total change, but make sure your hose to your wastegates comes from the intake manifold, not somewhere closer to the turbos like the turbos themselves. The pressure drop from the compressor, through the piping and intercooler, to the intake manifold could account for most of that differece.
The E01 will raise the boost as well so you can get the same effect by doing that.
BTW, congrats on the TT kit. I think you'll find that the extra boost will make a nice difference. The only effect altitude has on a boost controlled turbo car is it puts the turbos a little higher in the pressure ratio range on the efficiency maps but I don't think it will have much of an effect (at least not negative or noticeable) on a pair of 18G's at 6 psi.

Mark
www.Quantum-Racing.com

 

Sounds right. I thought the boost controller would be needed to be able to actually adjust to hit a relative pressure of 5.5 psi @ 5000'+ a.s.l.

relative with the spring at 5.5 psi, it should be around 3. Where are you located?

 

Sounds right for alt.

 

thanks for the feedback mark... sounds like you know your stuff

 

If they tap the boost at the front of the plenum (That is where most people get it from), and you are still boosting 3psi on a good gauge, then you still have a problem...regardless of altitude. The wastegates at set at 5.6psi, and you should be boosting at least 5psi.

 

"...relative with the spring at 5.5 psi, it should be around 3. Where are you located?"


im in new mexico

 

I've driven my car at 6000ft elevation and I still got full boost...even before the boost controller.

 

Right, but it does depend on where you tap for pressure for the wastegates. If it's different than the intake manifold and you tap for your boost gauge at the manifold, that could cause the pressure loss.

Mark
www.Quantum-Racing.com

 

350zDCalb, i believe you may have a wastegate issue? when we had the stock springs in our wastegates we boosted a consistent 5.6 pounds. altitude should not impact boost levels. we are at 5,800 feet or so. i would look into vacum lines and a potential leak at the wastegates. springs should hold 5.6 pounds without much vacum. just my opinion.-jason

 

Very nice. However, I think you may be a little confused on your dyno numbers at this altitude. The numbers you posted are SAE (or some other standard method) corrected, meaning that they represent what you would dyno at sea level (There is no way your car stock would hit 232 acutal whp at 5000+ feet). Your actual dyno numbers at this altitude are going to be lower, although the boosted numbers are not going to suffer all that much (boosted cars are not affected as much by altitude). Where in New Mexico are you located? I am guessing Albq or Santa Fe because of the elevation you mentioned. I was also wondering who did the install for you?

 

A leaking vac line will raise boost, not lower it.
Again, it may have something to do with where the boost gauge versus the wastegate hoses are tapped. Make sure they are tapped together and tapped up by the throttle body or manifold.

Mark
www.Quantum-Racing.com