Max 5psi boost after turbo install

Talk and Tech about turbocharged 924/944/968 cars
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jeyjey
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Get an inductance heater for that stud. Heat it red hot, let it cool, and repeat until it comes out easily. The temp cycles *will* break it free at some point.

#31

944m3
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I’ve suggested this video on several other threads. So you might have seen it. But I highly suggest to watch, it will really help you understand everything around wg and boost controllers. I watched it maybe 3-4 times before it all sunk in and made sense. The bulb will go on and you might be able to answer the questions you have.



Shameless plug, I have the A-Tune chip along with MAP sensor and Bosch 3 bar fpr. This will also help with down low performance. PM if you’re interested.

Last suggestion speaking from experience 🙂 just do the upgrades to a dual port and mbr, sport cat, and chip if you can (but you don’t need a chip with a Tial or any wg). Bite the bullet cause nothing is easy but this is as easy as it gets. you will like the early spool up.

#32

chrischrischris
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How do you upgrade to a sport cat? Do you mean cut out the stock and weld in something else?

#33

944m3
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chrischrischris wrote: Fri Jun 05, 2026 1:04 pm How do you upgrade to a sport cat? Do you mean cut out the stock and weld in something else?
Yes. Or buy a complete setup from Fabspeed or Lindsey among others.

#34

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danmartinic
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944m3 wrote: Fri Jun 05, 2026 12:11 pm

Shameless plug, I have the A-Tune chip along with MAP sensor and Bosch 3 bar fpr. This will also help with down low performance. PM if you’re interested.

The MAP sensor that came with my A-Tune was terrible: when it began to fail, all the drivability symptoms pointed to a million other things.. then I had a unusual idea to test the MAP and sure enough, it was very erratic. I bought a Delphi replacement --it's for specific GM cars such as Fiero or Firebird-- and problems solved

You can buy Chinese knockoffs for peanuts and I suspect that's what came with the chip

Note that the official tech paper for it instructs mounting high & nearly horizontal to avoid moisture contamination.. hard to accomplish for us.. so regularly checking the voltages almost routine now

Point of the story is unfortunately, many upgrades add more things that can fail and make diagnosing issues harder 🤦‍♂️

#35

944m3
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A bone stock 944/951 can drive you nuts too :lol: but I get your point.

#36

chrischrischris
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I was reading about the A-tune. It's pretty cool that you get 3d mapping with their chip, providing your MAP sensor is working. Did any other vendor produce anything comparable?

My car is 1987 with the 24 pin chip socket, so I would need to change or modify my DME to use this option. Currently using the 24 pin Lindsey Maxx chip, which is pretty good.

#37

944m3
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I don’t believe there was anything similar. Considering piggybacks or full standalone complexity the A-Tune was very simple to install by comparison. Not sure why it wasn’t further developed. Perhaps because it didn’t really add power it just smoothed out power delivery. You really feel it in first and second gear. Much more responsive.

#38

Glassmuseum
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944m3 wrote: Fri Jun 05, 2026 12:11 pm I’ve suggested this video on several other threads. So you might have seen it. But I highly suggest to watch, it will really help you understand everything around wg and boost controllers. I watched it maybe 3-4 times before it all sunk in and made sense. The bulb will go on and you might be able to answer the questions you
Yep thank you. I have seen it but I am going to watch it again. And prob again..
944m3 wrote: Fri Jun 05, 2026 12:11 pm Shameless plug, I have the A-Tune chip along with MAP sensor and Bosch 3 bar fpr. This will also help with down low performance. PM if you’re interested.
Interested. Will pm.
944m3 wrote: Fri Jun 05, 2026 12:11 pm Last suggestion speaking from experience 🙂 just do the upgrades to a dual port and mbr, sport cat, and chip if you can (but you don’t need a chip with a Tial or any wg). Bite the bullet cause nothing is easy but this is as easy as it gets. you will like the early spool up.
I am headed exactly in this direction. Incrementally though.. The problem I have now is in what order and how I should run it (dual vs single). I am leaning towards replacing the wastegate first with Tial and either a MBC or EBC. Then complete exhaust. And then chip upgrade. Looking at this exhaust from Lindsey with cat
https://www.lindseyracing.com/LR/Porsch ... XH-32.html

I may try to replace the stock wastegate stud and see if it helps. But I feel like that’s going to be close to as much work as it would for replace it. So I’ll have to see.. Assuming when you mentioned “mbr” you are referring to manual boost controller? Thanks again.

#39

chrischrischris
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When I removed my stock wastegate I broke every stud. Glad I had no intention of reinstalling. I think some decent machine shop tools and/or experience is needed to tackle these studs, so make sure you are careful picking your battles.

Also, sounds like the a-tune would be a nice upgrade for anyone but that particular setup may not be plug and play with your particular ECU since you may have the 24 pin DME. If so, there are a few ways to upgrade your DME to accept a 28 pin, but you should know if you need to plan for that.

#40

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