[konstat]

Originally Posted by Shadowbelmi

Soooooo, after pulling the plugs, found a leaking injector #4, so I decided to upgrade to used index 12's. After installing them, my fuel trims seem to be worse than they were previously by a little bit. I thought I could trust the seller as they had good reviews but seems I was sold higher milage index 12's than advertised. My fuel trims aren't astronimical but they are further apart than they were when I had the one leaking injector. I'm going to pull the plugs in the morning and check to see if these index 12s are leaking. Might have to go back to the old ones and just replace the one leaking index 1 that I had.

How’s your AFR look? Negative Fuel trims are typical when running 93 on the stage 2+ tune. The fuel scalar is increased to allow the use of up to about E30 to curb timing corrections if needed. If your AFRs and fuel pressures look good and you’re certain you don’t have boost leaks then I wouldn’t worry about trims.

I’m surprised the ethanol isn’t doing anything for your timing corrections. Did it at least decrease corrections by a degree or two? Being that you’re in Colorado the lower air density could also be playing a role. There’s a chance you need a custom tune to account for the air density, probably need to retard the timing

[konstat]

Originally Posted by Shadowbelmi

Timing corrections are still occurring whether I run e85 or not and whether the plugs are bosche or not. The mechanic that did the injectors said that my valve cover was leaking even though it was replaced not even 8k miles ago. God I love the n54

Are you sure it’s leaking? I thought mine was leaking too but then realized it was leftover oil in spark plug threads from when it was leaking

[Shadowbelmi]

Originally Posted by konstat

How’s your AFR look? Negative Fuel trims are typical when running 93 on the stage 2+ tune. The fuel scalar is increased to allow the use of up to about E30 to curb timing corrections if needed. If your AFRs and fuel pressures look good and you’re certain you don’t have boost leaks then I wouldn’t worry about trims.

I’m surprised the ethanol isn’t doing anything for your timing corrections. Did it at least decrease corrections by a degree or two? Being that you’re in Colorado the lower air density could also be playing a role. There’s a chance you need a custom tune to account for the air density, probably need to retard the timing

Soooo, I blew my driver side rear axle and at the same time something in my transfer case went kaboom during a launch. I was on 91 mhd stage 2+ which is so weird that anything broke at this power level.

I had a shit ton amount of logs that night of rolls. The timing corrections occur at each shifting point or at the start of a low gear such as 2nd or 3rd but don't occur if I do a pull at 4th.


AFRS are sitting between 11.8-12.1 but this was on a 91 map ( I use the multimap and can't distinguish between the e30 logs and the 91 logs.)

I'm pretty sure my e30 AFRs were alright according to the first post I put in with my log. I'm not sure what the corrections keep happening especiallyon the e30 map since both my fuel pumps (low and high) seem within range of optimal working conditions.

I attempted to add a considerable amount of ethanol just randomly which I think was closer to e50 or higher and my hpfp took a shit so I found the limit of that now, but with an e30 tune Im putting roughly 7.5-8.5 gallons of ethanol which is still high according to my ethanol calculator but the corrections continue to happen. Car is sitting now anyways until I get the transfer case issue figured out. I'm assuming it has something to do with the altitude or one of the fuel pumps. Even though they appear fine in the logs there might be an issue with that.