[N54_Fan]

Originally Posted by chumley

I can't imagine how a trunk mounted tank would make any sense if you're concerned about that!?!

You ever thrown chinese/cuban/etc take out in your trunk? It takes about 5 seconds of driving before your whole car reeks of it.....
I for one would not even consider a tank of meth in the trunk with lines running through the bottom under the length of the car.

LOL,...seriously?? You think chinese food in a styrofoam box wrapped in a paper bag is the same as a sealed spillproof tank in your trunk with a cap much like a gas tank? They are made not to spill. If they do spill say in a car accident would you want it to spill into an engine bay that is ~250 degrees or more OR your trunk that is probably 110 degrees (AT BEST) in hot summer in FL? If you use 50/50 mix it probably doesnt matter where you put it but if you go above that it sure as hell does as the flammability of this goes up.

The benefit of the engine bay is ease of access and not using trunk space and having a firewall between you and the tank.

The benefits of the trunk are more room for bigger tank, and not having to use your windshield washer fluid tank for it.

You may think that another benefit of the engine bay tank is that the sensor will tell you when the washer/methanol level is low on the washer fluid tank. Realize they also make sensors for low meth level on trunk mount systems too.

It really come down to dealers choice and what type mix of methanol you run and how big a tank you want. I think both options are "best" depending on your priorities.

Just my 0.02

[themyst]

Originally Posted by N54_Fan

LOL,...seriously?? You think chinese food in a styrofoam box wrapped in a paper bag is the same as a sealed spillproof tank in your trunk with a cap much like a gas tank? They are made not to spill. If they do spill say in a car accident would you want it to spill into an engine bay that is ~250 degrees or more OR your trunk that is probably 110 degrees (AT BEST) in hot summer in FL? If you use 50/50 mix it probably doesnt matter where you put it but if you go above that it sure as hell does as the flammability of this goes up.

The benefit of the engine bay is ease of access and not using trunk space and having a firewall between you and the tank.

The benefits of the trunk are more room for bigger tank, and not having to use your windshield washer fluid tank for it.

You may think that another benefit of the engine bay tank is that the sensor will tell you when the washer/methanol level is low on the washer fluid tank. Realize they also make sensors for low meth level on trunk mount systems too.

It really come down to dealers choice and what type mix of methanol you run and how big a tank you want. I think both options are "best" depending on your priorities.

Just my 0.02

Well said. the low level float sensors do the same thing, and the Progressive methanol integration on both piggybacks do a great job letting you know how your meth tank is doing

[Doug007]

Originally Posted by chumley

I for one would not even consider a tank of meth in the trunk with lines running through the bottom under the length of the car.

The recent puddle under LostMarine's car was enough to convince me of this.

[themyst]

Originally Posted by Doug007

The recent puddle under LostMarine's car was enough to convince me of this.

would you rather have that puddle inside your car?

[OpenFlash]

Originally Posted by Doug007

The recent puddle under LostMarine's car was enough to convince me of this.

This was also the reason we mounted the pump in plain sight and not tucked away somewhere behind the bumper. We thought that being able to do a quick cursory inspection from time to time useful. When you can see the ENTIRE meth system (lines and all) in one glance, there's a pretty big peace of mind factor that comes into play.

Originally Posted by themyst

would you rather have that puddle inside your car?

I don't think he is suggestion running lines through the interior of the car.

[cn555ic]

Originally Posted by shiv@vishnu

This was also the reason we mounted the pump in plain sight and not tucked away somewhere behind the bumper. We thought that being able to do a quick cursory inspection from time to time useful. When you can see the ENTIRE meth system (lines and all) in one glance, there's a pretty big peace of mind factor that comes into play.

This I have to say is a plus...After reading LM thread, it would be the best to see all the lines in plain view to troubleshoot it...

[Clap135]

Originally Posted by shiv@vishnu

Actually, it explains a lot if you took the time to understand it. Please read it again and refine your question(s).

please look at my log and refine your logic?

[Doug007]

Originally Posted by themyst

would you rather have that puddle inside your car?

No, running the lines inside the car is a worse idea than running them under the car.


I'll take short lines run under hood where I can check on them at every fill up.

[Clap135]

My lines are rated to 2500psi, to cut that shit you pretty much bolt cutters.....every fitting is metal. The oem fuel system will leak before my meth kit leaks lol

[Jake@MOTIV]

lol i've been running meth on the stock tune, the AP, the procede...you run it all the same way lol

[Clap135]

Originally Posted by Mike@N54Tuning.com

It's getting pretty deep in here. The benefit of a PWM solenoid instead of a PWM pump is that you can PWM the solenoid with less expensive hardware. So you don't need a specialized high current methanol controller. One drawback is the pump runs hotter (as its at 100% duty more often) and will burn out sooner. Combine that with extra engine heat and you have a recipe for short pump life IMHO. What you really have with a PWM kit running off a piggyback is a pump, a solenoid, a flow sensor, and a nozzle. A basic meth kit like that goes for around $350.

To clap135's point with a platform that uses closed loop fueling full time there is no performance benefit with a progressive strategy over a basic on/off switch. I like the progressive strategy to save a little meth during part throttle and keep the pump run time down but that is more of a personal preference than anything.

Mike

Thats 3 times in 3 weeks....2012 is real.
So how long till you copy it and sell it for half price?

[Syndicategt]

Originally Posted by shiv@vishnu

This was also the reason we mounted the pump in plain sight and not tucked away somewhere behind the bumper.

Hey what's wrong with my bumper pump Yea it's hard to see but with my HPFP reliability, my bumper is off frequently enough

The only issue I have with the WW tank is it's only a 1.5 gallon tank, granted your line is going down to the bottom, and will only last you about 20 min of a track session. My Infineon experience last year was positive, I got my wiper low warning on the last lap. But it is a lot safer IMO than a trunk tank.

[Doug007]

Originally Posted by Clap135

My lines are rated to 2500psi, to cut that shit you pretty much bolt cutters.....every fitting is metal. The oem fuel system will leak before my meth kit leaks lol

The OEM fuel system is steel tubing that is secured extremely well to prevent ANY rubbing.

A bit of vibration and a rub will go through any plastic and even stainless steel tubing in no time at all.

Not saying you can't do a truck mounted meth kit correctly, but I really don't feel like pulling off the undertrays to check on it on a regular basis to make sure it hasn't developed a rub that is leading to a pinhole that is leading to a massive leak.

[Clap135]

Originally Posted by Doug007

The OEM fuel system is steel tubing that is secured extremely well to prevent ANY rubbing.

A bit of vibration and a rub will go through any plastic and even stainless steel tubing in no time at all.

Not saying you can't do a truck mounted meth kit correctly, but I really don't feel like pulling off the undertrays to check on it on a regular basis to make sure it hasn't developed a rub that is leading to a pinhole that is leading to a massive leak.

I dont think you realize how much 2500psi is.

[OpenFlash]

Originally Posted by Clap135

please look at my log and refine your logic?

If your boost never drops below 10psi (even during shifts), your basic meth kit will never stop pumping. Even between shifts. So you don't suffer from the response delay characteristic of variable pressure systems. Also, since your boost is always much higher than the pressure switch threshold, you will always be flowing at 200psi which ensures good atomization. So if this is the only way of driving (WOT, high boost with fast shifts), then you are avoiding both shortcomings I outlined in my earlier post. Shortcomings that will be present during the remaining 99.9% of driving conditions (when you aren't drag racing). Conditions that I know that even you are subject to.

You also got a knock event going into 3rd gear.

Shiv

[Doug007]

Originally Posted by Clap135

I dont think you realize how much 2500psi is.

Tubing is only rated at 2500psi when it hasn't been rubbed through...

[themyst]

Originally Posted by shiv@vishnu

If your boost never drops below 10psi (even during shifts), your basic meth kit will never stop pumping. Even between shifts. So you don't suffer from the response delay characteristic of variable pressure systems. Also, since your boost is always much higher than the pressure switch threshold, you will always be flowing at 200psi which ensures good atomization. So if this is the only way of driving (WOT, high boost with fast shifts), then you are avoiding both shortcomings I outlined in my earlier post. Shortcomings that will be present during the remaining 99.9% of driving conditions (when you aren't drag racing). Conditions that I know that even you are subject to.

You also got a knock event going into 3rd gear.

Shiv

For a street driven vehicle, which means you're in vacuum or <5psi boost 99% of the time, and WOT for 1%, you are saying these basic setups are perfectly fine? That basically describes the better majority on this forum. I suppose precise PWM injection isn't quite useful for 6AT owners who are WOT throughout any sustained run as well based on your comment.

[Clap135]

Originally Posted by shiv@vishnu

If your boost never drops below 10psi (even during shifts), your basic meth kit will never stop pumping. Even between shifts. So you don't suffer from the response delay characteristic of variable pressure systems. Also, since your boost is always much higher than the pressure switch threshold, you will always be flowing at 200psi which ensures good atomization. So if this is the only way of driving (WOT, high boost with fast shifts), then you are avoiding both shortcomings I outlined in my earlier post. Shortcomings that will be present during the remaining 99.9% of driving conditions (when you aren't drag racing). Conditions that I know that even you are subject to.

You also got a knock event going into 3rd gear.

Shiv

Knock event, damn looks like your autotune didnt catch it.
Can you show me logs at 17-18psi with no mods on the pwm kit? Id love to see it.

Like I stated earlier, my meth turns on at 6psi, 100 percent. The stock tune is meant for lets say 8psi, anything over that, in ANY form of driving the meth is spraying, so what exactly is the problem?
Lets say I feel like taking a sweeper, 3rd gear 10psi not wot, meth is spraying, i check up to rotate, get back on it 10psi, meth is spraying, hence the 6psi start point.

[Clap135]

Originally Posted by Doug007

Tubing is only rated at 2500psi when it hasn't been rubbed through...

email me your address, Ill send you a piece if you make a video of you rubbing it on whatever you want. You might have to pay some hosting fees for file sizes that big though.

[Doug007]

I think puddles under meth user's cars have proved rubbing through tubing is a real possibility.

[Clap135]

Originally Posted by Doug007

I think puddles under meth user's cars have proved rubbing through tubing is a real possibility.

Yea, did you miss the part where lostmarine was using tubing from home depot? Thats not meth line, you can squeez that bullshit line shut with your fingers....

[Joshboody]

Originally Posted by themyst

For a street driven vehicle, which means you're in vacuum or <5psi boost 99% of the time, and WOT for 1%, you are saying these basic setups are perfectly fine? That basically describes the better majority on this forum. I suppose precise PWM injection isn't quite useful for 6AT owners who are WOT throughout any sustained run as well based on your comment.

I hit >5psi often at about half throttle... semi-spirited driving, but not all out. I would say 4 to 7psi would be pretty typical for me at only 11.5psi max.