telly444

hey guys I was wondering if its worth it for me to upgrade my alky system from a single m15 nozzle to a dual. at what point is this sufficient to do? I have a heads/ cam/ exhaust/ bolt on / eforce supercharged Z06 . I should make around the 650 rwhp range and have my meth kit installed and have not had it retuned yet. was wondering if I should get a dual nozzle kit and would it be worth it for me?

realcanuk

Dual is too much for that setup.. stick with single.

telly444

how have you been buddy? thanks for the input

1MEANGS

Big single is sufficient

TTZ06VETTE

Definitely single. Julio can recommend. Single worked for me at 850whp. Can always add a nozzle but if you start with too much it will be difficult to calibrate.

lt1z

I prefer single almost always. I run a single M15 nozzle at 850whp

Unreal

<850, single.

Way too many people are over mething their setups.

DOUG @ ECS

Which also causes uneven cylinder distribution, we were able to really see this on our cars with EGT sensors. 300* difference front to back on a 1000rwhp car. A lot of meth doesn't like to turn 180* into the front cylinders!

schpenxel

So you were seeing higher temps on the front cylinders?

DOUG @ ECS

Correct, switched to individual cylinder and they equaled themselves to within 100*.

lt1z

Did you notice it to be worse on any specific intakes?

Pekka_Perkeles

Good question, but on the other hand, this is probably with aftermarket ECU and with that kind of setup, hardly anyone is bothering with a stock intake manifold anymore.

I hope I'm wrong, since I would also like to know the distribution issues with stock manifold!

lt1z

I would say it is due more to the front TB design of most intakes people would run on a corvette. Going to direct port meth and running an ECM with individual cylinder fuel control will of course allow fine tuning.

Most here are running a Fast, LS3, LS7 intake etc with single or dual nozzle meth being injected before the TB.

Pekka_Perkeles

Yes, I agree. This is exactly what I meant. Sorry for being vague.

neverstop

I'm sure doug can chime in but I believe the setup Doug was measuring EGTs for each cylinder had an ls7 intake. I could be wrong but when I asked about this too I believe he said they only run dual M10 tips on their meth kits now and not any bigger due to this dynamic.

if anyone has any data on other intake manifolds though I'd love to see it. I'd imagine some of the carb style intakes are probably far better for cylinder distribution where everything enters at the top but I could be way off.

DOUG @ ECS

Correct, LS7 and a FAST LS7 is what I have back to back data on.

FeArZ

So is one nozzle enough for a tuner to tune either meth dependent or not?

I am shooting for 700-800 and my tuner will us the meth to supplement. Would one m15 nozzle work for this?

Mybad realized I brought a 7 month old thread back.

Unreal

Yes easy.

speedz06

Fearz...if you dont mind can you show me how you have your nozzle set up? Also if you are running straight meth or mix? Thanks