marksstingray

Im Running A&A with Ysi with smallest pulley and using single 15gpm meth nozzle. Running about 12.5 psi (max peak) boost all stock internals. So far Im not seeing any knock retard and lamba stays about .85 at WOT after meth is in full effect (100% meth). I have been told by some that I need dual meth but mine seems to run fine and I only have the ALKY dial set to about 5 to maintain .85 lambda. also running about 18 degrees of timing in the max power range areas. Do you meth gurus see any big issues here.

stab1991

badass1g

Good gosh 12.5 psi how many miles on this setup? I have a lower pulley but haven't dared to install it, traction is already an issue at 9 psi. Make sure your tune is on point!

robert miller

^^^ stock bottom end with 18 deg of timing at 12.5 lbs of boost his tune has to be spot on IF HE hasn't pulled to many WOT.

OP here on those high of # with a YSI I would for sure put in the 10 nozzle for sure. If you only got the one new that one is the 15 so I would put the 10 in as well... Robert

John Micheal Henry

^^^^ Agreed.. I'm running an A&A-TI with a 3.8" pulley and single line meth. On my final tune my tuner turned the total time down to 11*. The car is a beast with 644rwhp..

Jaycajun

marksstingray

I went ahead and ordered a new twin alky 10lb setup in hopes of better optimization of alky into the intake at least. I have been running it like this for 6 months though. Probably do a couple of wide open pulls a day on average and track about once a month. I have the meth come in hard and quick at about 4.5lbs of boost. Richens up to about .78 then I tuned it to pull fuel till it hits .85 as I get close to max HP range. I started at 10 degrees of timing but kept pushing it up till I found 1-2 degrees of knock retard at 21 degrees of timing then backed it off to 18. I run constant logs and never see retard at 18. So far stock pistons are holding. I have my eye on Texas speeds 416 lt1 long block when this finally gives up the ghost.

badass1g

What kind of times 1/.4 mile are you seeing? Also how much HP/TQ?

marksstingray

689/654 I haven't run the 1/4 mile since my last pulley change. I generally run on hallet speedway race course. Only been to drag strip twice. ran 10.69 with bigger pulley and 9lbs of boost. but never could get any traction with 20" wheels even with toyo 315 r888r's. and its an M7 car with stock clutch.

John Micheal Henry

marksstingray, Were the 315 R888R's rubbing?? What wheel and are you lowered on the stock bolts?? Thank you for you time and reply..

marksstingray

I am lowered on stock bolts.
Yes they rub a little on the outside of tire to the inside of fender when I hit a big bump or leave the line hard but its not a big deal. I do have aftermarket 11" wide rims on mine though.