First off thanks for reading this, I am new at running a FWD car at this power level and I don't care to admit that as far as changes in hondata I have hardly any idea what I'm doing and I know I need more seat time to practice my launches, but everytime I go I break right off and it limits my practice time. I'm just looking for some help that would limit my downtime at the track and let me get some more practice in.

Here's a list of the problems;
(1) I'm alway's breaking axles on a full power pump tune pass (before you tell me to pre-load read post)
(2) My pump tune boost settings are for street tires and I don't change settings without consulting someone who know's what they are talking about and I don't have anyone here local to ask. I also don't totally understand the (.10, .65 etc. etc. I always thought that it would be a psi data field not a % or whatever that is.)



I don't have the cash right now for some DSS's and I was wondering if I could get some help with my boost settings on my pump tune. The car made 475hp/320tq on 93 and I'm using 25x8.7 slicks @ 10psi with Quaife LSD and CC twin disc and OEM GSR tranny. I know about preloading and slipping the clutch and I have been doing that, I have also corrected a suspension setup since I went to the track last that I think might have been over-extending the axles (the front was around an inch or more higher than the rear) and now the rear is around an inch higher than the front) LMK also if this needs more adjustment (suspension is koni yellows with GC coilovers) When pre-loading and slipping the clutch within a fraction of a second of clutch being let completely out I shear an OEM axle and it is always sheared in the hub if that means anything. The car is also dead hooking so I think a lil spin off the line might help so where do I start, and what do you suggest for settings? This setting is for driving around on the street with street tires and first works pretty well other than not having a lot of power in first, but it doesn't hardly spin first, second breaks loose shortly after boost comes in and starts to wheel hop near the top, third sometimes hooks ok depending on the transition from second. Like I said that's on 215 street tires not slicks, just trying to give as much info as I can.

Here is the pump boost settings with boost cut @ 19psi



Can I change the pressure vs Duty fields to whatever I want them to be? For example 5psi = 20% or is there a science to it like if 16psi = 100% then 20% = 3.2psi?

Should I put more into first to give it some tire slip at the line? What would you suggest? I don't have the file on my comp that has the lauch control data, but I'll pull it off the ECU when I get to the car and post up the screenshot on it so I can get your opinion on that.

Here is the only pass I've ever made in the car with slicks on it. I was only able to do that cause I took off like an 80 year old lady, but it started to pull hard to the left and it was a constant battle to keep it straight after it got going. After that pass my slicks had slight rub marks and a lot of rubber on the lip of the fender. I don't know for sure if that was from slowing down (didn't cram brakes) or rubbing going down the track. The very next pass I got a single and tried two stepping and preloading same result as always shortly after the clutch is completely out the axle explodes and the nut and a small part of the axle shot against the wall. After I changed it I went to street tires for the rest of the night and just eased it out of the hole.


http://youtu.be/BteH8cg2Fs0

It ended up trapping a best like 92 or 94 in the 1/8th mile (can't remember) on the street tires with these boost settings and I don't know for sure what it trapped with the slicks from the video cause the time slips are at the house and I'm at work.