Good news. It IS a TD05. It says "TD05 TURBO" on it. The number has some grime in it that makes it resemble a 3 in the right light. My apologies for the rise in blood pressure. :)

Now are we getting something figured out? :-)

Dan

it actually says, "td05 turbo" or just td05?

TD05 TURBO is what is says... what is it a knock off?

It has smaller numbers underneath of that label that I want to get to you when I can get a chance to dig in that deep.

yeah, sorry but that one is defeinately a knock off. keep an eye on it or start saving to replace it.

we still need to find out if there is a boost controller in there though.

do you know how to find the wastegate and follow the vacuum lines?

That's what I was afraid of. What do I need to watch out for?

I think I am familiar enough to get you the boost controller answer. I'll let you know if I need any assistance.

Thanks a lot pwee for all of your help. Seriously.

Dan

Now the next question is where I can find a rebuilt stock turbo for my car?

Any ideas?

I am about to rebuild my t25 for kicks and giggles (i say this because the kit to rebuild is worth as much or more than a good used t25) and ill sell it to you once im done if you're interested.

Yeah you really don't need a rebuilt turbo, just find one with minimal shaft play.

Sorry for the delay guys, holiday weekend stuff :-)

The vacuum line does go to a solenoid of some sort roughly underneath the air box area (a little to the right when looking straight down). I did not see any adjustments on it. It looks like a factory piece that translates the boost pressure to a proportional electrical current for the computer or something.

I'm going to hold off on the turbo for now. Thanks for the offer. I need to save some $$ up now after having to buy parts for this car :).

So what turbo is supposed to be stock in this car? Is the TD05 bigger than what is supposed to be in there...?

I did see an adjustable factory vacuum solenoid of some sort up by the firewall on the drivers side, where the lines go to the fuel pressure regulator from the intake area. Is this my rich/lean adjustment? Or is the regulator a 33psi max type on/off deal?

I ordered a wideband air/fuel ratio gauge kit from summit. Hopefully that will give me a better idea on what is really going on with the fuel sitch.

Thanks,
Dan

Thats good, that solenoid is your BCS (boost control solenoid) and it should be hooked up. you are correct, it does translate boost readings for the ECU



The stock turbo is a Garrett T25 and is smaller than the td05 turbos that came stock on the first gen cars or evo's. That's one of the reasons you are running lean.



Good idea on the wideband!

The solenoid on the FPR isn't adjustable. the FPR is boost referenced and, just like the BCS, the FPR solenoid assists the ECU in making the proper fuel adjustments.

The regulator is a rising rate 43psi FPR. I don't know what it maxes out at though because it doesn't flow very well for higher boost applications.

So if I am running lean, is this something that may be able to be resolved with an aftermarket FPR? I see in the service manual that the stock psi rating is around 33psi, but the fuel pump is capable of around 43psi. If so, would you be so kind as to provide some recommendations (with links if possible) on a good adjustable FPR that would be plug in play into my current stock setup? I would like to get one that mounts directly to the fuel rail like the stock one.

Thanks a lot for your continued support.

Dan

well, we have the turbo nailed down and you have a nice monitoring device (wideband) on the way. The next thing thing we need to figure out is how much boost you are running. if its holding steady at 8-10psi you can get away with an AFC or some other tuning device. It will save you money because you can add fuel without spending $180-200 on a fuel pressure regulator and plumbing.

Do you have a boost gauge?

Good Point. I didn't know something like that was available. Yes I did order a boost gauge as well. I guess I'll just post my results once I get everything installed. Any ideas on where I should be running on my air/fuel gauge for this motor? All I know is I think 13-14 on most motors is about right...

Also, any tips/tricks on where to get the vacuum line/wideband wiring through the firewall into the cockpit on these vehicles? Or am I just better off pounding a hole through the firewall and sealing it with a grommet/sealant? Where is a good source to tap into iginition controlled wiring and constant power wiring in the cockpit? And where do you recommend I tap into the boost vacuum line to get an accurate reading?

(Sorry for all the ?s) I just assume someone must have done a similar project on this vehicle.

Here is a link to the wideband kit so you have an idea of what I'll be looking at for my readings:

http://store.summitracing.com/largeimage.a...=inn-3801_w.jpg

Thanks,
Dan

did you already order that wideband? there are cheaper ones available that are just as accurate, they can also be found on summit racing. AEM UEGO is the one I've used in the past. it has a digital display as well as an LED sweep. just a thought.

13-14:1 afr is perfectly fine for a non turbo engine. you want to try to stay between 10-11 for a turbo engine for a few reasons.
1 - the turbo creates higher intake temps.
2- more air + more fuel crammed into a cylinder will create more compression which also causes heat.
3 - more air + more fuel creates a longer burn on the ignition stroke = more power

the way you described is best, drill a hole in a convenient place on the firewall and seal with a grommet and RTV. some people also poke a small hole in the steering column boot

tap your boost gauge on the BOV line. just use a T-fitting for the tap. don't tap your FPR vacuum lines like most people do.

don't worry about questions, ask as many as you need. the more questions asked and answered the better this forum becomes :thumbsup:
wiring can be tapped anywhere. the ignition wire from the steering column is a good on/off source and the constant you can run directly from the battery if you want.

Yeah, I saw the AEM. I'm an analog type of guy, plus I liked some of the expandable features that this setup came with. Just personal preference, but I appreciate the heads up bud :)

Thanks for the information about where I should be. Like I said, turbo is a new world for me.

Sounds good on the firewall deal, I'll stick with that for install.

Question: At what conditions/scenarios should I take readings from the wideband for this car?

I'll post all of my results when I get everything installed (Hopefully by this weekend, but family is coming, so you know how that goes). :grin:

Thanks again!

Dan

the innovate you have coming is #1 for accuracy, just a thought.

the most important a/f ratios are the ones under heavy load. 70% throttle and above. I always like to tune mine at 40%, 75%, and 100% WOT

have fun with the family :beer: