couple of alky ?s

[INEEDAGN]

I've been considering alcohol injection for my 87 GN but after reading i'm still left with questions:

1.does the alky show up on a scan tool (i have turbolink) in any form?

2. Can I use the 3 bar map that I'm already using for the turbolink boost harness for both (with the pac)?

3.how crazy can you get with this before it washes the cylinder walls and causes excessive wear?

4.How much extra tuning is involved with alky in general?
And how much more with the pac?

5. Does this affect turbo spoolup? my car is slow as hell with the stock converter.

I'm sure i can think of more. this sounds like what I want to do and if i do it I'll be buying it as a kit (probably from razor) to make sure I get everything I need and matched. And in case you were wondering my car is an 87 GN with the following mods: forged pistons, 200/200 cam, te-44, 009's, ATR 3-inch dp with wastegate, walbro 307 (i think) hotwired, adj fpr, t-link, and soon to have a power plate also. my ultimate goal here is to run 21-22 psi on 91 octane and NO KNOCK. what do you guys think?


bob

 

[6SENSE]

1. Not exactly sure what is meant here, but.... should show up in the form that your KR is 0 and O2s stay up where they should be when your boost is ........ .

2. YES

3. Remember, IF SET UP CORRECTLY, you are misting the alcohol to where it atomizes as it gets to the cylinders. The primary operation of the alky/water injection is to cool the aircharge. The enrichment is a added bonus of the alky. Your not attempting to fuel the engine via alky injection, which I gues is a common misconception.

4. Every car is a little different. Dont worry, its not the type of thing that you constantly tune. Get it to where its working for you and then leave it alone and forget its there.. until its time to refill . Spend your tuning time playing with your boost
Razor, supplies more than enough info as far as how to set things to get you started with the PAC.

5. No. Unless things are not configured right and you are drowning in alky on the bottom end . On topend, definately NO, this is where you really benefit with higher boost (as Steve already stated). As a matter of fact this topic shows the beauty of the PAC idea. The benefit of the alky starting even earlier than in a ordinary alky setup while retaining normal acceleration (no bogg), plus of course you get the great topend benefit.

 

[Razor]

Looks like i'm not needed.. you guys are tremendous..

There may be a small issue with the turbo link boost sensing harness due to the way it was designed but I have a fix already. So yes it will work.

No cylinder wash issues since its not gasoline..now if you spray 200 PSI on a large nozzle to drown the motor.. then we may be talking wash down.

On 1, it will show up as less knock retard.

2) yes..with an added module.

3) above

4) pretty straight forward. Listen the car has to be in tune to work correctly with alcohol injection. It is not the fixall for detonation control. In other words if the motor works up to 14-15 PSI without any knock retard, then the alky will let you stretch it to the mid 20's easy. If it knocks at 6-8 PSI..then you have issues to fix before adding the alcohol.

5) Only if you spray too much down low..hence why the PAC was made.

20 PSI on 91..no problem..actually will probably get way more than that if you zero in on the tune..track your timing and fueling..

HTH

 

[salvageV6]

Alky. will show up on a wideband O2 sensor for sure.

 

[Razor]

Originally posted by salvageV6
Alky. will show up on a wideband O2 sensor for sure.

Yah.. I have a customer with a supercharged third gen Camaro, he's got a progressive that kicks on at 3 psi and is full boogie by the time its at 6 psi ..he's running flat 11:1 AFR. With the "other" system, it would kick on at 3 PSI it would shoot the AFR down to the mid 9's before it got to 6 PSI..so yes to the wideband reading it.

 

[VIN7]

Hey Razor

2) yes..with an added module.

Got mine in the mail today. OK how do I hook it up

This is what I am thinking...T-Link harness has three wires that plug into the MAP. Do I clip the signal wire in the T-Link harness and run the green wire from the module,and the green wire from PAC to the MAP? Then the blue wire from the module to the signal wire on the T-Link harness, wire Red/Blk to ign/ground?

Thanks,
Mike

 

[Razor]

Three wires on the MAP. Power, ground, and signal. The power and ground are not the problem. Its the signal that is. The signal wire to the T-link goes to the blue. Green goes to the MAP center. PAC green goes to the MAP center

As long as you supply 5 volts to the MAP power and a ground..we have lift off

 

[INEEDAGN]

cooooool

Well that's what I needed to know. Thanks for the info guys. The car is in winter storage now so It'll probably be around christmas bonus or tax return time before I spend any money on it. Add one more thing to my already long list.........

bob

 

[6SENSE]

Module for boost sensing harness? Is this another one of those everyone's car is different deals. Or in this case everyone's TLink?
My PAC is wired through the boost sensing harness with no module. When I tested during install, I had 5volts at the pwr wire for the MAP, Ground was there aswell, and 1.5volts at the signal wire (with ign on).

 

[VIN7]

1.5volts at the signal wire (with ign on).

Me too, but I must have my turn on point at a lower setting than you, because 1.5 volts was enough to turn my pump on.


Mike

 

[6SENSE]

Originally posted by VIN7
Me too, but I must have my turn on point at a lower setting than you, because 1.5 volts was enough to turn my pump on.


Mike

Turn on is/was ~5psi. Hmm, my understanding was that 1.5volts is the reading you want to have, with or without the boost harness.