Need help with boost!

[butters]

I got a really great deal on a 20g and front mount.


I installed both, well almost done. Anyway I dont have supporting fuel mods yet
have to wait a few weeks before I have the cash for pump, inj, and chip.

My question can I run 8 pounds safely till I get the upgrades? Should I run lower?

I am very aware of the danger of not having proper fuel this isnt my first go with a turbo.

I had a 3000gt VR4 so I dont need to hear a bunch of lectures on proper upgrades. I am fully aware, but couldnt pass up the deal.

Thanks for the help!

 

[86MCSS]

If you know the dangers of not having supporting fuel mods then why did you install the stuff? IMO you should have waited until you had the supporting mods. 8lbs on your 20g compared to your stock turbo is a whole different ball game and you will need more fuel when the turbo spools even if it is at only 8lbs.

 

[butters]

If you know the dangers of not having supporting fuel mods then why did you install the stuff? IMO you should have waited until you had the supporting mods. 8lbs on your 20g compared to your stock turbo is a whole different ball game and you will need more fuel when the turbo spools even if it is at only 8lbs.

Well lets start with my turbo is going bad/is bad. Then I just so happen to have some time from work. At the same time a few choice people offered to give me a hand. Oh and the access to the tools and shop came avaliable. All these came together at the right time. Add those fact to I have already waited 4 months. I figured just a good time to do it.


Now how about an opion on if 8 pounds is ok? I do have the front mount intercooler I mean will I just hit fuel cut?

 

[86MCSS]

No knowing until you try. I suggest getting a data logger off of Ebay for a couple bucks first. It will let you see whats going on with the engine and how it looks once you hit boost with that 20g.
I just said wait because it is exciting getting new parts but what good are they if they are not working right and you blow your engine up? Then you have nothing to drive and play with.

Hope everything works out.

 

[Omega]

I doubt you will be able to get it as low as 8 psi. Just hook the WG to the intake and call it a day. All you have to do after that is keep your foot OFF it. Oh, at least rewire the stock pump.

You can get the logger.. well you should have it anyway. You will probably do more harm than good screwing around trying to find out where the car's limit is than driving it like a grandma.

Out of curiousity, you installed a known dying turbo? As in bad seals, or the turbine are trying to escape through the housing?

The FMIC is good for keeping the air temp down, nothing to do with fuel cut.

How did you kill your 3KGT?

 

[butters]

The turbo I put in is good. The one I took out is BAD.


I have a blitz boost controller I should be able to dail it down? What do you mean by hook the wg to the intake? Till I get the injectors I will be driving it like a grandma. I was thinking if I just dial it as low as possable then keep the foot off the excellerator I should be able to keep the boost down to around 6-8 pounds.

I didnt kill the 3000 a shop did. I was doing a turbo swap 2 big 16g's, emanage, injectors.
Due to a huge lack of time ie work and new baby I took it to a shop. I of course ask if they knew these cars? hell ya we know what were doing they said. 2 weeks later while still in there possesion it jumped 12 deg of timming. I had already bought the talon as a daily driver and just going to use the gt for fun and race gas. I then started parting the gt and tryin to get the Talon TSI AWD to were the gt starts for HP.

I learn a very valuable and expensive lesson. NEVER NEVER let someone else turn the wrench on your car!!!!!

I am working on the logger now. I know I should already have one just tryin to find a good deal.

 

[Omega]

A boost controller only enables you to increase the pressure. The WG spring dictates the least amount of boost possible. To get the least amount of boost out of the system, you hook the wastegate to the turbo outlet.

The only other thing you can do is disconnect the flapper or adjust the WG (if possible)

 

[butters]

A boost controller only enables you to increase the pressure. The WG spring dictates the least amount of boost possible. To get the least amount of boost out of the system, you hook the wastegate to the turbo outlet.

The only other thing you can do is disconnect the flapper or adjust the WG (if possible)

Couldnt I just cap off the WG and not hook it to anything?

So Just any of the tubes going from or to my injen intake?

 

[Omega]

Uh No.

It must be connected to a pressurized source.. the turbo intake is vacuum at best. There should be a nipple on the compressor housing already. If not, any pipe leading to the TB will do.

 

[neuro]

Couldnt I just cap off the WG and not hook it to anything?

So Just any of the tubes going from or to my injen intake?

NO! Then it will just boost til you blow up the motor!

I know the 14B actuators run 9lbs when just plugged into the intake after the turbo (usually the nipple on the compressor outlet, if one exists, t'd off the BOV hose or somewhere on the intake manifold, but definitely NOT on the intake pipe before the turbo). I'm not sure if the 20G actuator is the same or not, though. Assuming it is, you can't run less than 9lbs of boost...period. I suppose you could just disconnect the actuator and wire the wastegate flapper open, but that would be almost no boost and all lag.

If you cap off the WG actuator, the wastegate doesn't open and it can't bypass the exhaust gasses around the turbine, which means boost climbs uncontrolled until you hit fuel cut...or worse! Now, since you're still on stock fuel, you might be able to get by on 9lbs of boost on the 20G. You'll probably just hit fuel cut every time you get on it, though.

Just out of curiosity, what did you do to this 3000GT motor that pushed you to put a couple of Big 16G's on it? Those are huge on a 3KGT!

 

[butters]

Thats really not all that big for the 3000. I had all the bells and whistals though. Fuel mods and the like. No forged internals, but it really shouldnt have been a problem.

I really just wanted to break all four loose on a regular basis. When i went to work putting it together the big 16g's were the newest turbo mod. I got a kit from Just performance dot com. I was one of the only to see my kit it coast right at 1700 with the turbo's. Compare that to the not much better upgrades that are the standard for the gt being almost double that.

I will go back to the 3000gt, but I wont mod it at all this time. The after market for those cars are shit to say the least. There fast as all hell though even stock.

Just one more question. The turbo will only run as low as the WG actuator alllows right?

If I turn my blitz down all the way wouldnt that just do the same thing? How does hooking it up to a vaccum do anymore than just going back to stock boost levels? Thats about 9 ponds on the eclipse correct?


Thanks for all the help fellas. Though these cars are simulare to the GT theres still some diffrences and I am very thankful for the help.