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New regal owner who meeds some help

fehler18

New member
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Buick Ownership
12 Regal gs
Hey everybody, i recently purchased a 12 regal gs 6 spd. Did some reading on this forum (kinda makes me wish i didnt get one but too late now) and the car already has some mods on i. Just kinda wondering if the mods are good or not. Mods i know it has is a zzp intake. 4h short throw shifter, intercooler piping/ intercooler and boots look aftermarket, brembo front calipers, exhaust has mufflers welded on that dont look stock (no names or anything). Car has a boost guage and pegs around 25psi which makes me assume it has a tune? Im used to diesels and 25 psi seems way to high on this car is thats even accurate?? Kinda looking for help on if current mods are worth keeping and how to tell if car has other mods (turbo, downpipe, pcm, tune etc) thanks in advance. Sorry if this is a super common question!
 

ROMAD

Buick Newbie
38
20
8
Maumee, OH
Buick Ownership
2015 Regal GS MR6
Not being completely familiar with the 2012's, I do know quite a bit about ZZP. I used them pretty much exclusively for my Cobalt SS build and they make good stuff (better than stock anyway). I can only assume with that list of parts, the previous owner had one of ZZP's "stage" kits installed. A tune is part of that.

The best way to find out for certain, would be to contact ZZP. They've always been very helpful whenever I've had questions. It's possible that if you give them your VIN, they might even have a record of the tune. Any tune they do, should have a list of accompanying mods as well.

All that being said, whenever you buy someone's modded car, it's a crapshoot as to whether they installed it with bubblegum and twine, or if they used a professional. Or at least, if they DIY it, they follow the manuals, torque specs, etc. Even then, it's sometimes hard to trust.
 

fehler18

New member
10
0
1
Buick Ownership
12 Regal gs
Contacted zzp and they can only look it up by owners name which i dont have. Cars has been throwing p172 and p299 codes and loosing all boost pressure since i brought it home. Car is currently at the dealer but i have little faith they will repair it. Could either of those codes be related to a tune if it has one?
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JONNYESS

A Regular
126
39
28
Buick Ownership
Buick
I hope things work out for you, but there's probably a lesson to be learned here about buying a used vehicle already modded out....{queue air-raid sirens in my head} :)
 

CoyoteEcotec

Active member
232
55
28
Buick Ownership
2016 Regal AWD T
Contacted zzp and they can only look it up by owners name which i dont have. Cars has been throwing p172 and p299 codes and loosing all boost pressure since i brought it home. Car is currently at the dealer but i have little faith they will repair it. Could either of those codes be related to a tune if it has one?
Yes and no. The tune shouldn’t cause the codes but it could lead to a driving style that causes premature failure of certain components if that makes sense. What’s your mileage? And is the dealership where you purchased the car from?
 

fehler18

New member
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1
Buick Ownership
12 Regal gs
I hope things work out for you, but there's probably a lesson to be learned here about buying a used vehicle already modded out....{queue air-raid sirens in my head} :)
I knew the risk when i bought it. Not a problem to fix myself just want to narrow it down before throwing parts.
 

fehler18

New member
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1
Buick Ownership
12 Regal gs
Yes and no. The tune shouldn’t cause the codes but it could lead to a driving style that causes premature failure of certain components if that makes sense. What’s your mileage? And is the dealership where you purchased the car from?
61,xxx and i dont plan on driving the car hard, but that bwing said i dont know how it was previously driven either.
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BoostedRegal2.0

Well-known member
1,139
430
83
Buick Ownership
2014 Regal 2.0 Turbo AWD Trifecta Tune
Contacted zzp and they can only look it up by owners name which i dont have. Cars has been throwing p172 and p299 codes and loosing all boost pressure since i brought it home. Car is currently at the dealer but i have little faith they will repair it. Could either of those codes be related to a tune if it has one?
Try cleaning the mass airflow sensor. It's possible the previous owner installed a K&N air filter and the oil from it contaminated the MAF.
 

fastNYsix

Member
30
10
8
Buick Ownership
1985 Regal Limited 6.0, 1987 GN, 2011 Regal T
The stock intercooler sits behind the condenser, vs zzp sits in front of it. The stock turbo outlet uses a two bolt flange that the charge pipe flange attaches to with an o ring. The z54 or zfr turbo that zzp sells uses a normal silicone or rubber coupling. 25 psi is normal for either of the upgraded turbos.
 

fehler18

New member
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0
1
Buick Ownership
12 Regal gs
Finally heard back from the dealer after they sent it to a buick dealer to get diagnosed. Buick dealer is saying it needs a turbo and my dealer is saying thats not covered under the 15 day 500 mile used car warranty so im sol. My question is since im just going to repair it myself should i go with a gm turbo (reman if available) or should i find a aftermarket one? Seems like turbos are common failures on the car so not sure if i really trust the build quality of the gm one.
 

CoyoteEcotec

Active member
232
55
28
Buick Ownership
2016 Regal AWD T
Finally heard back from the dealer after they sent it to a buick dealer to get diagnosed. Buick dealer is saying it needs a turbo and my dealer is saying thats not covered under the 15 day 500 mile used car warranty so im sol. My question is since im just going to repair it myself should i go with a gm turbo (reman if available) or should i find a aftermarket one? Seems like turbos are common failures on the car so not sure if i really trust the build quality of the gm one.
Turbo failures aren’t that common on the 2.0. The 1.5 Cruze is a different story.
 

fehler18

New member
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0
1
Buick Ownership
12 Regal gs
Cleared codes and havent gotten a turbo underboost code yet. Car still throws a p0172 and a p015b. Checked for vaccuum leaks and waiting for a pcv valve to come in and also going to replace the maf sensor. Both are cheap and easy enough to do. Will update once they are installed in case this helps anyone.
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CoyoteEcotec

Active member
232
55
28
Buick Ownership
2016 Regal AWD T
Cleared codes and havent gotten a turbo underboost code yet. Car still throws a p0172 and a p015b. Checked for vaccuum leaks and waiting for a pcv valve to come in and also going to replace the maf sensor. Both are cheap and easy enough to do. Will update once they are installed in case this helps anyone.
If I was getting a p015b and a p0172 I’d be looking at replacing the upstream O2 sensor since both of those codes are for it.
 

Walt G

Full Member
850
61
28
25 miles SW of Chicago
Buick Ownership
'12 Regal GS
Check to see if either of the oxygen sensors is mounted to the exhaust through some sort of extended bung adapter or something. Sometimes those are used to try to fool the catalyst monitor, but this would be the fault those might set instead. Probably not your issue, but quick and easy to check.
 

fehler18

New member
10
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1
Buick Ownership
12 Regal gs
Check to see if either of the oxygen sensors is mounted to the exhaust through some sort of extended bung adapter or something. Sometimes those are used to try to fool the catalyst monitor, but this would be the fault those might set instead. Probably not your issue, but quick and easy to check.
Alright ill check it out. The p0172 came back yesterday on the way home from work too.
 
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