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Old 08-10-2019, 11:23 AM   #15
TJay74

 
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Originally Posted by MrRuss View Post
Will do. Headers are coated tho.
You can still burn a plug wire even with coated headers.
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Old 08-10-2019, 12:30 PM   #16
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Get Brett / Pray Performance to do your tune remotely. He will get it straightened out in no time and is probably the best 6th gen guru out there. There are other quality guys out there like GPI and Jannetty but I've only dealt with Brett and he's amazing, he really understands these cars.

Email him datalog and he'll send you back a tune. His pricing is on his Facebook page.
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Old 08-10-2019, 12:59 PM   #17
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Originally Posted by jeportera View Post
Get Brett / Pray Performance to do your tune remotely. He will get it straightened out in no time and is probably the best 6th gen guru out there. There are other quality guys out there like GPI and Jannetty but I've only dealt with Brett and he's amazing, he really understands these cars.

Email him datalog and he'll send you back a tune. His pricing is on his Facebook page.
Uugh!!! So I would have to buy a hand held and pay for another tune??
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Old 08-10-2019, 01:20 PM   #18
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It'll be worth it! The best $$ you'll ever spend on your car.
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Old 08-10-2019, 02:46 PM   #19
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Uugh!!! So I would have to buy a hand held and pay for another tune??
Yeah now you’re down this path I would give him a chance to fix it. Prays tuning plus the hptuners is not a cheap option especially if you already laid out cash for this tune. I would get the intake ported and give him a shot to fix it. The shame is you couldn’t have cordes do it from the start. I wonder if they would’ve been ok with Texas speed headers
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Old 08-10-2019, 03:08 PM   #20
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I would not throw good money after bad.. a bad tune can mess your ride up. Pray and Cunningham are been both excellent top notch. Other vendors here have stellar reps. Just look at JDP's dyno... simply amazing.
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Old 08-11-2019, 01:22 AM   #21
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#s seem a little low for those mods. Maybe, have the re-check everything. i totally feel you on loudness. i recently replaced my stock Npp with a magna flow npp axle back and have instant regret. So loud and the drone is insane. i think your best bet is going to be oem Npp. I know I'm going back to stock npp. i may look for a zl1 npp with the larger tips.
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Old 08-11-2019, 06:56 AM   #22
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Should have brought it to JDP. They get 455HP without the Exhaust or E85.
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Old 08-11-2019, 07:45 AM   #23
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I run long tubes, gutted cat (cats clogged up) with NPP and made 830 rwhp/779 rwtq. Npp doesn't care, pull the fuse as I did with 500 miles on it. They are open all the time.
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Old 08-11-2019, 09:15 AM   #24
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I run long tubes, gutted cat (cats clogged up) with NPP and made 830 rwhp/779 rwtq. Npp doesn't care, pull the fuse as I did with 500 miles on it. They are open all the time.
Just wondering but are you concerned about the heat release profile and egt with that not being a straight through muffler at your power level?

I’m def feeling better about running it bolt on tho
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Old 08-11-2019, 11:19 AM   #25
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Yup that’s partly why I wanted the graph to see the lambda
They did not do a "before" dyno run.
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Old 08-11-2019, 11:23 AM   #26
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Originally Posted by Buckscamaro View Post
#s seem a little low for those mods. Maybe, have the re-check everything. i totally feel you on loudness. i recently replaced my stock Npp with a magna flow npp axle back and have instant regret. So loud and the drone is insane. i think your best bet is going to be oem Npp. I know I'm going back to stock npp. i may look for a zl1 npp with the larger tips.
Some of my friends suggest to line the trunk with sound proofing. Maybe under the back seat as well.

I spent good money on what I have and like the tone/sound, just need to take it down a notch in volume.
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Old 08-11-2019, 11:35 AM   #27
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Originally Posted by oldman View Post
I would not throw good money after bad.. a bad tune can mess your ride up. Pray and Cunningham are been both excellent top notch. Other vendors here have stellar reps. Just look at JDP's dyno... simply amazing.
If I'm getting it re-tuned, I'm going to nickD at CPR. He's pretty much the premier tuner in the entire southwest if not more. I have heard great things about Pray but would rather have someone "hands on".


As I said I went with Extreme Motorsports as I have history with them and CPR would not do what I wanted parts wise. I guess EM is not what they were.

I'll take the car back in and give 'em a chance to fix it and let you all know.
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Old 08-11-2019, 11:43 AM   #28
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Originally Posted by laynlo15 View Post
I run long tubes, gutted cat (cats clogged up) with NPP and made 830 rwhp/779 rwtq. Npp doesn't care, pull the fuse as I did with 500 miles on it. They are open all the time.
Not quite sure of your point, I ran mine stock with the fuse out also cause I liked the sound and it was not excessively loud.

When I was planning my build I listened to cars with LT's into the NPP and did not like the tone/sound, too high pitched and raspy for my taste. I prefer a nice low tone "classic" muscle car growl and the Stainless Works NPP sounded like what I wanted. Just didn't know it would be be so LOUD.
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