16t Max Boost

[jdlc]

Turbo newbie question

I got a 94 Turbo installed with a 16T, DIY rip-kit with Turbo XS BOV (don't know if it's the real thing or a knock off if this brand actually gets knocked-off), and mbc. It has 3" dual exhaust (could be wrong, it could be 2.5"). Intake is stock.

I don't have a boost gauge yet but test drove the car and it's boosting strong - have no idea thou how much boost I get. I'm looking at Autometer Cobalt mechanical at around $50 at EBay & Craiglist right now, so hopefully, it's accurate enough for my further test/adjustment.

So I guess, my questions are, is the Cobalt mechanical good/accurate enough to gauge boost? How much boost I can hope for with 16T?

Thanks

[JHEIII874T5M]

Yes, the cobalt mechanical gauge should do the job just fine. The 16T can boost up to about 18 PSI efficiently on these cars. If the car is still on original programming, I would suggest you do not go past 13-14 PSI. If the car is chipped then go to a dyno, listen for pre-ignition, and get a wideband a/f readout to see what you can boost.

[jdlc]

Thanks, yes, I believe the ecu is stock. And so are the injectors.

I will fix the car first and make it stage 0 before proceeding with any upgrade. Right now, done pretty much everything, including PCV. Will drop the pan after crank-case seafoam (engine is just dirty that oil is dark already even after oil change), and take care of the oil-sump seals et. al. while in there.

Thanks again.

- OrleeC

Yes, the cobalt mechanical gauge should do the job just fine. The 16T can boost up to about 18 PSI efficiently on these cars. If the car is still on original programming, I would suggest you do not go past 13-14 PSI. If the car is chipped then go to a dyno, listen for pre-ignition, and get a wideband a/f readout to see what you can boost.

[turbobrick]

Thanks, yes, I believe the ecu is stock. And so are the injectors.

I will fix the car first and make it stage 0 before proceeding with any upgrade. Right now, done pretty much everything, including PCV. Will drop the pan after crank-case seafoam (engine is just dirty that oil is dark already even after oil change), and take care of the oil-sump seals et. al. while in there.

Thanks again.

- OrleeC

stock injectors are adequate for that turbo.. nothing larger is needed.

[Zulu]

Made 23lbs with 16T on stock injectors...wouldn't bother going past 18lbs though, not worth it for the extra couple hp.

[ViperVette]

20 psi is fuuuuun!

[stick70]

20 psi is fuuuuun!

been there, done that. I ran about 18psi on mine for a lil bit, not smart...but neither was i

[Zulu]

Why is 18lbs not smart?

[Account_Deleted_T5M]

I run 22lbs on the 16t which is outside of the efficiency range, but the internals will hold it if your careful.

[jdlc]

Okay, a lot of good and encouraging feedbacks.

Couple more questions guys if you care to educate me some

1. I believe 15G is the stock turbo for 94, what is the stock boost for 15G?

2. Which year/model car is fitted with 16T and what is its stock boost?

Back to my car:

I will shoot for 18psi. Words are I'm fine with stock injectors, and I'm practically staged-0.

3. Am I fine with stock intake and stock fuel pump towards my goal?

4. Is tuning necessary or can I just hope to see an upgraded 94 ecu that is mapped or upgraded for higher boost in the for-sale section? If I see one, would it matter if it came from manual or AT?

Thanks

- OrleeC

[stick70]

Why is 18lbs not smart?

stock tune, burning oil on bad rings and valve seals, oil leaks everywhere, and mad shaft pla after 175k miles. Just a little bad ;)

[JHEIII874T5M]

Okay, a lot of good and encouraging feedbacks.Couple more questions guys if you care to educate me some 1. I believe 15G is the stock turbo for 94, what is the stock boost for 15G?2. Which year/model car is fitted with 16T and what is its stock boost?Back to my car:I will shoot for 18psi. Words are I'm fine with stock injectors, and I'm practically staged-0. 3. Am I fine with stock intake and stock fuel pump towards my goal?4. Is tuning necessary or can I just hope to see an upgraded 94 ecu that is mapped or upgraded for higher boost in the for-sale section? If I see one, would it matter if it came from manual or AT?Thanks- OrleeC

1. Yes, the 15G with a conical outlet turbine housing is the stock turbo for a 1994 and 1995. In 1996 they switched to a 15G with a straight outlet turbine housing/flat outlet turbine housing. Stock boost for your 1994 850 Turbo should be 9-10 PSI.2. The 1998 S70/V70/C70 T5 and R came with a straight outlet 16T. Your original downpipe off your 1994 or 1995 850 Turbo will not fit. If you have a 1996 or 1997 850 Turbo downpipe it will fit. The 1999+ S70/V70/C70 T5 came with an angled outlet 16T. No downpipes off of 850s will fit onto the angled outlet 16T. You will need a custom downpipe.- Stock injectors should support 18 PSI on the 15G, I would strongly suggest you get them professionally flowed & tested.3. Yes, the stock air intake will support your goal. I would suggest you put a K&N drop-in air filter (part # 33-2670). The stock fuel pump will also support your goal. Keep in mind, the stock fuel pump is known to fail over time and suddenly, when it does just send me a PM and I can get you a deal on a Walbro replacement.4. An ECU that is mapped for higher boost would a good way to go. What do you mean by "is tuning necessary"? If you mean custom dyno tuning, then that would be the perfect way to get tuned. If you mean buying a chip, then yes that would also work. What I would not suggest is boosting 18 PSI on the stock programming, typically the stock programming won't even let you boost more than 14-15 PSI without cutting fuel/spark.If your car is automatic, get an automatic ECU. If your car is manual, you can usually run either a manual or automatic ECU.

I run 22lbs on the 16t which is outside of the efficiency range, but the internals will hold it if your careful.

What are your EGT's? With all the ignition advance your car's probably pulling you won't be singing that tale for long at all.

[jdlc]

Thanks man, I now have the info I need.

The 16T is already installed when I got the car, I would not know if straight outlet or angled, may be you could describe it and I can go look and see what I got. Suffice it to say I'm glad I have a newer turbo, and the car came with a newer tranny too with slightly less mileage than the engine (engine at 160+, AT with 100+ off 98 T5 with mod wiring for speedometer). At this point, I guess I could fiddle with mbc as soon as I get a boost gauge and at least get it to 14psi, then wait for a reasonable 94 AT ecu programmed/mapped for higher boost to come around in the for-sale section.

Will do the K & N as suggested.

I guess tuning as I understood it is dyno-testing and wide-band 'analysis'(?) When you guys mention upgrade chip, is it equivalent to saying re-programmed/re-mapped ecu?

Thanks again.

- OrleeC

1. Yes, the 15G with a conical outlet turbine housing is the stock turbo for a 1994 and 1995. In 1996 they switched to a 15G with a straight outlet turbine housing/flat outlet turbine housing. Stock boost for your 1994 850 Turbo should be 9-10 PSI.2. The 1998 S70/V70/C70 T5 and R came with a straight outlet 16T. Your original downpipe off your 1994 or 1995 850 Turbo will not fit. If you have a 1996 or 1997 850 Turbo downpipe it will fit. The 1999+ S70/V70/C70 T5 came with an angled outlet 16T. No downpipes off of 850s will fit onto the angled outlet 16T. You will need a custom downpipe.- Stock injectors should support 18 PSI on the 15G, I would strongly suggest you get them professionally flowed & tested.3. Yes, the stock air intake will support your goal. I would suggest you put a K&N drop-in air filter (part # 33-2670). The stock fuel pump will also support your goal. Keep in mind, the stock fuel pump is known to fail over time and suddenly, when it does just send me a PM and I can get you a deal on a Walbro replacement.4. An ECU that is mapped for higher boost would a good way to go. What do you mean by "is tuning necessary"? If you mean custom dyno tuning, then that would be the perfect way to get tuned. If you mean buying a chip, then yes that would also work. What I would not suggest is boosting 18 PSI on the stock programming, typically the stock programming won't even let you boost more than 14-15 PSI without cutting fuel/spark.If your car is automatic, get an automatic ECU. If your car is manual, you can usually run either a manual or automatic ECU.

What are your EGT's? With all the ignition advance your car's probably pulling you won't be singing that tale for long at all.

[JHEIII874T5M]

Thanks man, I now have the info I need.

The 16T is already installed when I got the car, I would not know if straight outlet or angled, may be you could describe it and I can go look and see what I got. Suffice it to say I'm glad I have a newer turbo, and the car came with a newer tranny too with slightly less mileage than the engine (engine at 160+, AT with 100+ off 98 T5 with mod wiring for speedometer). At this point, I guess I could fiddle with mbc as soon as I get a boost gauge and at least get it to 14psi, then wait for a reasonable 94 AT ecu programmed/mapped for higher boost to come around in the for-sale section.

Will do the K & N as suggested.

I guess tuning as I understood it is dyno-testing and wide-band 'analysis'(?) When you guys mention upgrade chip, is it equivalent to saying re-programmed/re-mapped ecu?

Thanks again.

- OrleeC

Almost sounds like you have a 98 T5 in a 94 850 body. Nice. Take a look at where the turbo connects to the downpipe, that's the easiest place to see if it's angled outlet or straight outlet. If the turbine housing has an angled bend in it, then it's angled outlet, but if it's just straight out with no bend, then it's the straight outlet. If you take a picture of it, we could help you identify it.

When most everyone refers to an upgraded chip on here, they mean sending the ECU in to a company such as Speedtuning, Upsolute, IPD, or Rica and having them remap their stock programming. Then that company sends your ECU back. You can then go to the dyno and pull a wideband readout under load, send that dyno sheet with wideband information back to them and get it remapped. Repeat that process until it's dialed in.

Ideally you would find someone that can tune Motronic 4.3 and take your car into them, put it on the dyno or even just tune it on the street, that way you can have "live" tuning. That would be far superior to just about any chip or remap you can buy for these cars.

[Zulu]

stock tune, burning oil on bad rings and valve seals, oil leaks everywhere, and mad shaft pla after 175k miles. Just a little bad

That's not the 18lbs fault...