Bolt-ons and not very happy with results....

MrRuss · 08-09-2019, 06:11 PM

Hey Forum,

Here's what I did:

Roto-fab dry CAI - installed by me
Soler Engineering TB - Installed by me

Car ran fine no issues, somewhat better throttle response for a couple weeks

Next, (all installed by local speed shop)
Speed Engineering 1 7/8 long tubes
Speed Engineering 3" catless mid-pipes
Stainless Works NPP 3" in axle back
Flex fuel kit
Tune for E85 and 91

Dyno was 419HP and 448TQ (said it was because E85 was more like E50?? and a HOT day, >100 degrees)

I was thinking should have been more like 440HP. Car is definitely quicker but is just too loud for my taste. I'm talking "piss off the neighbors" loud. I know I'm 53 but dang I'm not THAT old. I've been driving in Stealth mode and still too loud. I had the same set-up (almost) on my C5 Corvette and it wasn't nearly so loud, it did have catted mid pipes tho. I like a good deep growl but sheesh. I keep setting off others car alarms at work when I start it.

If I go with 3" in/out cats will that tone it down (and make it legal) or should I do something else?

FYI, I have factory NPP and had been driving with fuse 51 out and liked it but a little louder would have been fine with me. This is A LOT louder.

Any advise will be appreciated.

Yes, 1 spark plug boot is touching the header on each side so I have heat shields on the way.

Link to start-up video:
here

oslouie · 08-09-2019, 07:11 PM

So you're saying you dyno'd 419hp after all parts were installed? If so, that doesn't sound right. Might be in the tune. As for the sound, should have done headers first to see how tolerable it is and go from there. I say switch back to the OEM exhaust and see if that does the trick.

MrRuss · 08-09-2019, 07:49 PM

Quote:

Originally Posted by oslouie

So you're saying you dyno'd 419hp after all parts were installed? If so, that doesn't sound right. Might be in the tune. As for the sound, should have done headers first to see how tolerable it is and go from there. I say switch back to the OEM exhaust and see if that does the trick.

I had heard a stock NPP with headers and did not like it, that's why I went with the Stainless Works NPP.

oldman · 08-09-2019, 09:27 PM

tune sucks. and really since we are talking corrected HP, it is making more even less HP to the wheels. What is the uncorrected HP? Also all that no-cat SS 3" stuff does not add much HP... just saying. check for burned plug wire too.

TJay74 · 08-10-2019, 07:51 AM

I am gonna agree with Oldman, the tune is suspect.

Most of the HP gained from E85 is had by the time you hit E50. On a N/A engine from E50 to E85 you are only going to see 5-7 more rwhp.

With similar mods as you during he heat of summer I made 424rwhp with catless headers, Roto-fab CAI, and a Pray ported TB/IM combo. When I added E85 to the car and retuned I got the gas tune to 431rwhp on 91 and 455rwhp on E85 that was at E60.

6spdhyperblue · 08-10-2019, 08:03 AM

Get the intake manifold ported by pray. Can you post the dyno graph

MrRuss · 08-10-2019, 08:33 AM

Quote:

Originally Posted by oldman

tune sucks. and really since we are talking corrected HP, it is making more even less HP to the wheels. What is the uncorrected HP? Also all that no-cat SS 3" stuff does not add much HP... just saying. check for burned plug wire too.

419 is at the wheels from the Dyno graph.

MrRuss · 08-10-2019, 08:37 AM

Quote:

Originally Posted by 6spdhyperblue

Get the intake manifold ported by pray. Can you post the dyno graph

Don't yet have the file in hand, they are supposed to email me. Said if I come back with a fresh tank of E85, they will run it on the Dyno again.

I did and am still considering the Pray ported IM.

MrRuss · 08-10-2019, 08:39 AM

Quote:

Originally Posted by oldman

check for burned plug wire too.

Will do. Headers are coated tho.

6spdhyperblue · 08-10-2019, 08:45 AM

Cordes might be close to you... they can port as well

Gunkk · 08-10-2019, 09:10 AM

What was the dyno baseline?

What lambda was the car running post-tune for 419hp?

And what about torque before/after?

MrRuss · 08-10-2019, 09:33 AM

Quote:

Originally Posted by oldman

Also all that no-cat SS 3" stuff does not add much HP... just saying.

I figured that but I wanted to get rid of the AFM valves altogether. The SE LT's with the full length 3" mid pipes was only $650. Plus the LT's outlets are 3" and so are the SW NPP mufflers inlets.

MrRuss · 08-10-2019, 09:36 AM

Quote:

Originally Posted by 6spdhyperblue

Cordes might be close to you... they can port as well

I know, I wanted go with them first but they wouldn't touch the SE LT's and thier tune was much more expensive. I went with Extreme Motorsports cause they did my C5 Corvette years ago and did a great job.

6spdhyperblue · 08-10-2019, 10:47 AM

Quote:

Originally Posted by Gunkk

What was the dyno baseline?

What lambda was the car running post-tune for 419hp?

And what about torque before/after?

Yup that’s partly why I wanted the graph to see the lambda

08-09-2019, 06:11 PM	#1
MrRuss Drives: 2016 Camaro 2SS Join Date: Mar 2018 Location: Chandler, AZ Posts: 207	Bolt-ons and not very happy with results.... Hey Forum, Here's what I did: Roto-fab dry CAI - installed by me Soler Engineering TB - Installed by me Car ran fine no issues, somewhat better throttle response for a couple weeks Next, (all installed by local speed shop) Speed Engineering 1 7/8 long tubes Speed Engineering 3" catless mid-pipes Stainless Works NPP 3" in axle back Flex fuel kit Tune for E85 and 91 Dyno was 419HP and 448TQ (said it was because E85 was more like E50?? and a HOT day, >100 degrees) I was thinking should have been more like 440HP. Car is definitely quicker but is just too loud for my taste. I'm talking "piss off the neighbors" loud. I know I'm 53 but dang I'm not THAT old. I've been driving in Stealth mode and still too loud. I had the same set-up (almost) on my C5 Corvette and it wasn't nearly so loud, it did have catted mid pipes tho. I like a good deep growl but sheesh. I keep setting off others car alarms at work when I start it. If I go with 3" in/out cats will that tone it down (and make it legal) or should I do something else? FYI, I have factory NPP and had been driving with fuse 51 out and liked it but a little louder would have been fine with me. This is A LOT louder. Any advise will be appreciated. Yes, 1 spark plug boot is touching the header on each side so I have heat shields on the way. Link to start-up video: here __________________ Mr Russ Tim "the tool man" Taylor is my hero My Garage: '16 Chevrolet Camaro 2SS, Summit White, Adrenaline Red -- Rotofab CAI, Soler TB, 1 7/8 coated LT's, Full 3" mids, 3" Stainless Works NPP mufflers, Flex Fuel, E85/91 tuned '20 Honda Oddysey Elite 25th Anniversary Edition --wifes car, she said "No more SUV's" after the 2 CX-9's totaled Last edited by MrRuss; 08-14-2019 at 11:46 AM. Reason: Added pics

08-09-2019, 09:27 PM	#4
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,316	tune sucks. and really since we are talking corrected HP, it is making more even less HP to the wheels. What is the uncorrected HP? Also all that no-cat SS 3" stuff does not add much HP... just saying. check for burned plug wire too. __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.

08-10-2019, 07:51 AM	#5
TJay74 Drives: 17 Camaro SS 1LE & 16 Sierra AT CC Join Date: Nov 2016 Location: Norman, OK Posts: 2,424	I am gonna agree with Oldman, the tune is suspect. Most of the HP gained from E85 is had by the time you hit E50. On a N/A engine from E50 to E85 you are only going to see 5-7 more rwhp. With similar mods as you during he heat of summer I made 424rwhp with catless headers, Roto-fab CAI, and a Pray ported TB/IM combo. When I added E85 to the car and retuned I got the gas tune to 431rwhp on 91 and 455rwhp on E85 that was at E60. __________________ 2019 Corvette Z06 2LZ A8 - Halltech CAI, AWE non-catted X-pipe, Mamo V2 ported TB 592rwhp, bone stock 566rwhp 2017 Camaro SS 1LE - Procharger D1SC w/ Tial 2" BOV & Race intercooler / ARH full length catless headers / Alky meth injection system - 650rwhp on conservative tune SOLD

08-09-2019, 07:11 PM	#2
oslouie Drives: 2018 2SS M6 Redline Join Date: Oct 2014 Location: United States Posts: 431	So you're saying you dyno'd 419hp after all parts were installed? If so, that doesn't sound right. Might be in the tune. As for the sound, should have done headers first to see how tolerable it is and go from there. I say switch back to the OEM exhaust and see if that does the trick.

08-10-2019, 08:03 AM	#6
6spdhyperblue Drives: 6th gen Join Date: Aug 2013 Location: US Posts: 3,675	Get the intake manifold ported by pray. Can you post the dyno graph

08-10-2019, 08:45 AM	#10
6spdhyperblue Drives: 6th gen Join Date: Aug 2013 Location: US Posts: 3,675	Cordes might be close to you... they can port as well

08-10-2019, 09:10 AM	#11
Gunkk Thank you Al Oppenheiser! Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017 Location: Sarasota, FL Posts: 4,974 View My Garage	What was the dyno baseline? What lambda was the car running post-tune for 419hp? And what about torque before/after?

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