06-29-2013, 10:14 AM | #15 |
¡ʇuɐıןןıɹq
Drives: 2011 Camaro IOM 2SS/RS Join Date: Dec 2010
Location: Decatur, Illinois
Posts: 2,600
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You know its funny how no one mentioned or thought this turbo was to small over a year ago when Chris introduced this kit. Now everyone is saying it....
From my Note |
06-29-2013, 10:28 AM | #16 |
Drives: CGM,twin turbo, cam 2010 SS/RS Join Date: Mar 2011
Location: ROCKMART, GA
Posts: 2,185
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It has the same turbine wheel size as the turbonetics kit... I think even Chris said the kit was for 550 Rwhp. The kit was supposed to have 76/75 turbos originally. I'm not sure when the 67mm stuff started I still wouldn't have thought back pressure would have been that high.
Last edited by JLE58; 06-29-2013 at 10:43 AM. |
06-29-2013, 11:49 AM | #17 |
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You know I really didn't want this to turn into another HPS bash session. I think that we all agree on what type of shop it was and have had enough fun blaming them for this kit.
I would like options to correct the problem with the kit set up the way it is. I cant afford to redesign the kit right now nor can I afford to buy a larger turbo. There has got to be a cheaper way to lower the pressure that doesn't require me to change the whole design of the kit. I need to get the backpressure down to a reasonable level to keep my engine alive. I have a set of exhaust cutouts that will be going on when I get the car back, will that help while they are open? Will it need retuned afterword? I know that it normally wouldn't but I am not sure if it will in this situation. Could the stock cans that I still have on the car exaggerate this issue? Could they be damaged internally and cause this high pressure? If so those can go away for some flowmasters. If I get the backpressure down to, lets say, a 1:2:1 ratio will the car need to be retuned? I probably already know the answer to that but you never know. Could my lack of a catch can also exaggerate this issue?
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2014 1SS 1LE, bone stock for now.
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06-29-2013, 11:53 AM | #18 | |
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2014 1SS 1LE, bone stock for now.
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06-29-2013, 12:32 PM | #19 | |
Drives: 11 AGP TT SS, 14 ECS C7 Join Date: May 2012
Location: Anderson, SC
Posts: 352
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06-29-2013, 12:38 PM | #20 | |
¡ʇuɐıןןıɹq
Drives: 2011 Camaro IOM 2SS/RS Join Date: Dec 2010
Location: Decatur, Illinois
Posts: 2,600
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Wtf From my Note |
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06-29-2013, 01:02 PM | #21 | |
Drives: 2011 2SS/RS Join Date: Feb 2011
Location: AZ
Posts: 131
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You are in a tough spot and really can't afford to get yourself out of correctly. You should probably take this mess off your car and put it back to n/a.
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Be vewy vewy quiet, I'm hunting GT500's.
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06-29-2013, 01:03 PM | #22 | |
Drives: 11 AGP TT SS, 14 ECS C7 Join Date: May 2012
Location: Anderson, SC
Posts: 352
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As far as cats, exhaust & cut outs for back pressure I have ran open down pipe which did help the back pressure a little bit but it still was to high to run over 550rwhp my boost went up to 9lbs then fell on it's face in the upper rpms which is clear to see the turbo is well out of it's rang. Last edited by pincushin3819; 06-29-2013 at 01:15 PM. |
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06-29-2013, 01:06 PM | #23 |
Drives: CGM,twin turbo, cam 2010 SS/RS Join Date: Mar 2011
Location: ROCKMART, GA
Posts: 2,185
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It's not going to go away without larger turbo. I asked what size exhaust housing is on that turbo also like I said I wouldnt think it would be that high... The more free flowing the exhaust is the lower the backpressure will be but I don't think your going to free it up to much more than you have. You can try aftermarket mufflers and 3 inch exhaust may help a little.
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06-29-2013, 01:10 PM | #24 |
Drives: 2011 2SS/RS Join Date: Feb 2011
Location: AZ
Posts: 131
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Why do you guys keep trying so hard to do a front mounted single in these cars? They don't take to it well. If the engine bay was laid out differently, then sure put a T6 based turbo up there and run a 4" down pipe. But you'd have to hack the hell out of the car to fit all that.
A pair of 65mm turbine wheels with a pair of 3" exhaust pipes and the turbos mounted where the catalytic converters use to be. It works so well, I honestly think GM designed the car thinking they might TT it some day.
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Be vewy vewy quiet, I'm hunting GT500's.
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06-29-2013, 01:16 PM | #25 |
Drives: 2010 Camaro 2SS/RS Join Date: Sep 2009
Location: Down South
Posts: 1,497
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If you have a Comp Turbo you may be ok as they use straight cut wheels. Other companies use the larger size(inducer/exducer) for advertising purposes so a 67 wheel will be 67 on the large end but only 62 on the small end. Whereas Comp's are 67 all the way still small but a little more forgiving. Also, they can fit a bigger wheel using that same turbo. I have one of their CT43-8079 turbos on the Hemi Ram.
Which turbo do you have exactly?
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2004 Dodge Ram SRT-10 - Silver - Stock 2003 Chevy 1500 RCSB Stepside 400SS - 408 in now awaiting Turbo |
06-29-2013, 02:59 PM | #26 |
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Comp Turbo
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2014 1SS 1LE, bone stock for now.
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06-29-2013, 03:04 PM | #27 | |
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2014 1SS 1LE, bone stock for now.
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06-29-2013, 03:24 PM | #28 | |
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Go back to stock, why would anyone do that. Its still sitting at 546 HP and 599 Tq, going back to stock would be like driving a Prius. If the answer is as simple as being out of turbo, then so be it. I will live with what I got until I can financial justify doing further changes. However, there is always something that you can do that will not break the bank and still improve the situation. Throwing money at it is not the answer to every question on C5. I am just trying to figure out what is the correct route to take.
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2014 1SS 1LE, bone stock for now.
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