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Old 02-18-2020, 02:30 PM   #1
Astatenate
 
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Drives: 2015 ZL1
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Officially a 2015 ZL1 Owner!

Well guys! This is my introduction! I'll keep it short.

I am 25, located in Little Rock, AR! Name is Nate! I've owned a few toys! FBO 2011 Audi S4, 2013 Sierra lifted 10" on 24x14's, 2 different FBO + tuned 370Z's , 2013 5.0 Mustang, and 3 bikes 2009 ZX6R, 2009 R6 and 2013 fully built R1 drag bike!

So adrenaline and fast vehicles are nothing new to me! I've always wanted a ZL1 and I'm finally happy to say!I a m the owner of 2015 ZL1 A6. I take delivery of the car this Saturday Feb 22nd! I will keep y'all posted with my mods !

Below is a list of mods I plan to buy and get tuned! Feel free to drop any opinions on my mods list or anything I might be over looking or things I might not need I have listed!

- Texas speed 1 7/8" headers, Corsa cat back, Roto fab intake, 160* thermostat, 850cc injectors, JLT oil catch can, 10" lower ATI pulley w/ harmonic balancer relocation bracket 63mm idler pulley and 71.5" green gates belt, AFCO dual pass/dual fan HX, reinforced inter-cooler brick, NGK TR7IX, roto fab SC inter-cooler coolant reservoir!
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Old 02-18-2020, 02:54 PM   #2
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only things I would change is, the oil catch can mighty mouse or elite can. plus 1000cc injectors or bigger. spend the money once for future mods.
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Old 02-18-2020, 03:20 PM   #3
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Beautiful car minus that auto transmission. Hahah
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2012 M6
Kooks 1 7/8, off road pipes , full corsa exhaust ID1300s/ 22% lower / 2.5 upper, JLT CAI, DSX flex fuel, DSX AUX fuel pump. S19 cam
Tuned and built by Speed Inc
635/632-93 octane
725/738-E85
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Old 02-18-2020, 03:41 PM   #4
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Quote:
Originally Posted by tartagliazl1 View Post
only things I would change is, the oil catch can mighty mouse or elite can. plus 1000cc injectors or bigger. spend the money once for future mods.
Hmm so just do 1000cc + in case I plan on e85 + dual 450lph pumps in the future haha ? Fair enough!

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Originally Posted by Coop[580 View Post
Beautiful car minus that auto transmission. Hahah
Haha I’m going for a 1/4 mile car. I plan on doing 17x10 wheels and 28x10 Hoosier radial for weekend fun. Auto are faster. But I agree M6 is more fun :(
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Old 02-18-2020, 04:12 PM   #5
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Originally Posted by Astatenate View Post
Hmm so just do 1000cc + in case I plan on e85 + dual 450lph pumps in the future haha ? Fair enough!



Haha I’m going for a 1/4 mile car. I plan on doing 17x10 wheels and 28x10 Hoosier radial for weekend fun. Auto are faster. But I agree M6 is more fun :(
No I think you'll want 1300 injectors and an 18% lower at least. You should talk to one of the well known tuners on this site, maybe they will chime in and encourage you to call them. That way you won't need to buy and re tune 2 or 3 times.
I can envision you ending up at 23% or more overdriven and E85...
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Old 02-18-2020, 04:17 PM   #6
RobZL1
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Congrats on the new ride, and welcome!

Agreed on the injectors- get 1000cc at least, probably 1300. Along the same lines, one thing you are missing is a BAP. Your fuel pump will need help feeding that 10" overdrive.

Also, I'd step up to 2" headers since you're doing it from scratch. If you ever decide to get up into the 750+ range, the 1-7/8" will hold back some ponies. One test I saw showed a 30 rwhp increase going from 1-7/8" to 2" on a car that was originally around 830hp.
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Old 02-18-2020, 04:39 PM   #7
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Originally Posted by silversleeper View Post
No I think you'll want 1300 injectors and an 18% lower at least. You should talk to one of the well known tuners on this site, maybe they will chime in and encourage you to call them. That way you won't need to buy and re tune 2 or 3 times.
I can envision you ending up at 23% or more overdriven and E85...

Correct me if I'm wrong but 10.0" crank pulley = 28% OD right? I've been in contact with a local tuner who said 850-1000cc injectors and stock FP will be sufficient for my mods. He said I'd only need new FP or BAP and 1300cc injectors with e85. Currently I plan to stick with 93. Or was your response just directed towards me going e85? Sorry made that confusing lol

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Originally Posted by RobZL1 View Post
Congrats on the new ride, and welcome!

Agreed on the injectors- get 1000cc at least, probably 1300. Along the same lines, one thing you are missing is a BAP. Your fuel pump will need help feeding that 10" overdrive.

Also, I'd step up to 2" headers since you're doing it from scratch. If you ever decide to get up into the 750+ range, the 1-7/8" will hold back some ponies. One test I saw showed a 30 rwhp increase going from 1-7/8" to 2" on a car that was originally around 830hp.
Well I spoke with a really well known tuner who's local to me and very familiar he's with GPI performance. He said 850cc injectors should do the job but get 1000cc at least or 1300cc if I plan on e85 in the future as well as a dual 450lph FP if I plan on going e85 as well.

If I just plan on staying on 93, will I still need 1300cc or will 1000cc be sufficient? Also still need a BAP or dual FP if I'm only running 850-1000cc injectors? My tuner said the stock FP should be good unless I go e85 or go crazy big on injectors. Also will def keep in mind 2" headers, I just heard of fitment issues. Not sure if I'll be going 750+ but I guess the HP bug will bite me like it always has! Thanks again for the input!
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Old 02-18-2020, 04:42 PM   #8
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Also one random question guys! The car I'm buying has 39k on it. Supercharger was replaced at 35k due to isolator recall. Comes with all paperwork! But did the replacement superchargers come with a solid isolator or just another SC with spring isolator? Needing to know if I should add solid isolator to the mod list? I don't want the marble noises HAHA!
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Old 02-18-2020, 05:24 PM   #9
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Quote:
Originally Posted by Astatenate View Post
Correct me if I'm wrong but 10.0" crank pulley = 28% OD right? I've been in contact with a local tuner who said 850-1000cc injectors and stock FP will be sufficient for my mods. He said I'd only need new FP or BAP and 1300cc injectors with e85. Currently I plan to stick with 93. Or was your response just directed towards me going e85? Sorry made that confusing lol

Yep, I misread, I thought you said 10% not 10". Size matters
Yeah your on track. What RobZl1 and I are saying is if you are thinking of going for more just do it now on what parts you get. 1300 injectors don't cost much more than 1050s, bigger headers... don't buy a boost a pump then fuel pumps. Just tryin' to save you money and extra work. Get a firm idea what hp and e85 or no before you start.
Yes I'd go E85, I did, if that was a question, and I don't disagree at all with what GPI or above said.

Your supercharger should be good to go, It's unclear to me even on replacements if they put solids then went back to spring loaded with grease, I wouldn't worry about it until if it makes noise unless you already have it apart.
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Old 02-18-2020, 06:39 PM   #10
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Quote:
Originally Posted by silversleeper View Post
Yep, I misread, I thought you said 10% not 10". Size matters
Yeah your on track. What RobZl1 and I are saying is if you are thinking of going for more just do it now on what parts you get. 1300 injectors don't cost much more than 1050s, bigger headers... don't buy a boost a pump then fuel pumps. Just tryin' to save you money and extra work. Get a firm idea what hp and e85 or no before you start.
Yes I'd go E85, I did, if that was a question, and I don't disagree at all with what GPI or above said.

Your supercharger should be good to go, It's unclear to me even on replacements if they put solids then went back to spring loaded with grease, I wouldn't worry about it until if it makes noise unless you already have it apart.

Cool thanks so much for the fast and educated replies! I appreciate all the knowledge from the get go! I wanted to keep 750 or below to be honest just have a real fast fun weekend toy! That's why I kinda figured 1 7/8" headers and no e85 would be good enough, I don't half a** stuff so if I need 1000cc
or 1050cc injectors if I just plan on going 93. I know obviously dual 450 FP and 1300CC if I plan on going e85 but I really just don't know if I will. I know it'll help cooling and more power. I guess I gotta flip the coin on it. Is there anything else needed besides dual 450 FP's, 1300cc injectors and flex fuel kit?
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Old 02-18-2020, 07:17 PM   #11
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Quote:
Originally Posted by Astatenate View Post
Cool thanks so much for the fast and educated replies! I appreciate all the knowledge from the get go! I wanted to keep 750 or below to be honest just have a real fast fun weekend toy! That's why I kinda figured 1 7/8" headers and no e85 would be good enough, I don't half a** stuff so if I need 1000cc
or 1050cc injectors if I just plan on going 93. I know obviously dual 450 FP and 1300CC if I plan on going e85 but I really just don't know if I will. I know it'll help cooling and more power. I guess I gotta flip the coin on it. Is there anything else needed besides dual 450 FP's, 1300cc injectors and flex fuel kit?
What silversleeper said. We're just saying spend the money once if you think you might ever want to go bigger, that's all. If you want to stay under 750rwhp on 93 octane, then the 850's will be fine (although the ID1050x's would be my choice).

I will argue that you DO need a BAP, though, even on 93. You can technically run without it, but your fuel pressure will fall to the low 40's or high 30's at the top of the RPM band. The ECM will compensate with injector pulsewidth so you don't go lean, but you will lose atomization and power (as well as pushing injector pulsewidth closer to the maximum). Much better to have a constant 65 psi at 5000+ rpm as opposed to a pressure that falls down to 40-ish.
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Old 02-18-2020, 08:56 PM   #12
StreetRage320
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A lot of great advice above. Your choice of build is on my dream list except I have the ID1050 & 2" headers w/o cats on my list..LOL.

The only thing I would suggest that has not been mentioned is to change the rear diff fluid, unless it is documented when it was last done. Especially if you are going to be 1/4 mile dragging..

Great looking car! Congrats!
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Old 02-18-2020, 09:46 PM   #13
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Nice car and congrats! Welcome to the tribe here. You can already see the guys have been helping you with decisions for your car and you cannot ask for a better group than right here. I have a question though. I was under the assumption that after GM had so much trouble with the isolators on the 12 -13 models they went to the solid ones in the 14-15 models. If that is right I wonder why they had to fix yours? Am I wrong? Somebody chime in here cause mine is a 15 and I need to know.
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Old 02-18-2020, 09:59 PM   #14
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Nice ride! Welcome to the forum!

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