Meth questions
Thread Starter
Racer
Joined: Jan 2014
Posts: 409
Likes: 147
Meth questions
Ok i purchased a 2017 C7 A8 that had the following mods: A&A V3 Ti trim with 4" pulley,Texas Speed stage 3 cam,Alky Control meth kit..2 nozzles,Texas Speed 1 7/8 long tube headers,X pipe no cats,heads ported and polished by shop in Texas with head studs with a very conservative tune...17 degrees of timing up top...so with that said ..my questions are...has anyone with similar set up removed one meth nozzle from the dual kit and gotten good results? Also does everyone run straight meth or some mixture?
Last edited by Rod2013C6; Jan 3, 2020 at 01:25 PM.
Le Mans Master
Joined: Mar 2010
Posts: 7,049
Likes: 945
From: DFW TX
Ok i purchased a 2017 C7 A8 that had the following mods: A&A V3 Ti trim with 4" pulley,Texas Speed stage 3 cam,Alky Control meth kit..2 nozzles,Texas Speed 1 7/8 long tube headers,X pipe no cats,heads ported and polished by shop in Texas with head studs with a very conservative tune...17 degrees of timing up top...so with that said ..my questions are...has anyone with similar set up removed one meth nozzle from the dual kit and gotten good results? Also does everyone run straight meth or some mixture?
Yea you don't need dual nozzles with that setup. Especially if it has LT4 injectors and HPFP. If you just had one 15 gph nozzle on straight meth it would be fine. I never ran a mixture, always 100% meth. It wasn't until I went to a e85 mixture and about 15 psi of boost did we add another meth nozzle.
Thread Starter
Racer
Joined: Jan 2014
Posts: 409
Likes: 147
Yeah thats what i was thinking..still learning about the car..it seems to really want to spin up really quick when it comes in so i am going to eliminate one to see how that effects it...thanks for your response
Le Mans Master
Joined: Mar 2010
Posts: 7,049
Likes: 945
From: DFW TX
you also can’t just remove a meth nozzle without having the tune looked at / adjusted for proper A/F and injector timing
Drifting
Joined: Sep 2016
Posts: 1,582
Likes: 866
Stop!!! If you remove a nozzle your playing with fire. Your car was tuned with 2 nozzles in your tune. The tuner probably started with one(like in my case) and the car wanted more for possibly multiple reasons. Meth is cheap insurance,keep em both unless you want to get it retuned and have some power decreases. Gary
Former Vendor
Joined: Dec 2009
Posts: 3,353
Likes: 166
From: 19804
Are you still on stock pistons? Why are you looking to remove a meth nozzle? What size nozzles are installed currently? We run straight M1 meth in our builds. Where are you located? I would suggest having the car dynoed and checked over by a shop that knows Blower c7's first before changing anything.
Thread Starter
Racer
Joined: Jan 2014
Posts: 409
Likes: 147
I am in NC and i believe it is on stock pistons...purchased the car from a small used car dealership who bought it from auction online...i spoke to the shop that did the meth and A&A install and he told me that the guy who owned the car wanted it real safe so they installed the meth as a way to keep iats in check and by the tune it only is running 12 degrees of timing up top...i know the tune needs some work in the torque tables because when you really stand on it ..it wants to jump up and down in rpm as if the throttle is opening and closing quickly and i am learning how to read and understand tuning on a direct injection car...i think the trans could use a tune also.
Racer
Joined: Nov 2008
Posts: 495
Likes: 50
If the question is does the car need dual nozzle meth for fueling at your power level than the answer is no. One M10 or M15 would be fine. As others have said because the car was tuned with a dual nozzle setup than if will need to stay that way unless you have it retuned. Heck it could have two small M5 jets which would be the same as a single M10. I have heard of people running two small size jets as a layer of safety in case one nozzle gets clogged for some reason.
Where do you live in NC? If you need a tuner I have a couple of suggestions.
Where do you live in NC? If you need a tuner I have a couple of suggestions.
Last edited by Silverboost; Jan 5, 2020 at 11:10 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski