Turbo BS Thread

He could run 30psi on that setup. Just keep revs down for the head.

 

Thats why you never trust a fart

 

BTW, for all interested, I will be bypassing the stock rods and hyper pistons for forged chromoly rods and pistons!

 

Absolutely not.

 

I went through and bumped my fuel table up in my light cruise area since its been just a touch lean after about a full tank of e85 now. Any idea why my stft are dead nuts 0 and ltft are pretty lean still?
and afrs are ??? Where ever they want when ever they want i guess

 

Ohh wait i'm thinking about a 4g63t motor. My bad. Mine dynoed over 400whp on stock long block and still kicking at 300k miles and over 10 years of abuse. Head was rebuilt just to install cams years back though.

 

You want a SS header and downpipe? Why? Or am I misunderstanding?

 

probably because mild steel rots

 

Looks like it has some black coating but obviously not sure of the quality. It's pretty cheap at $275 for downpipe plus manifold (less than my LCE header alone) so you could always replace it when it does rot. Or have it a ceramic coated before you install. Isn't that what @KirkRio did?

 

... I thought kurt was kirkrio in the earlier discussion about forged internals, muh bad

 

If the long term is lean, and the short term is 0, then its done all the adjusting it needs to, and is running off the set long term value. You are overall lean still. Bump that fuel up!

 

i assumed that but I also thought the stft would still show rich as it was trying to correct for the leaness, anyway back to the tables I go

 

Nope. That is computer saying I like being right here.

 

@yota243 You want the sum of ST and LT trims to be 0. If you have a large LT you need to add fuel until your ST is the same magnitude but negative. I.e. way more fuel.

 

Ok so i added more fuel and got my trims better but my afrs are goin kinda crazy now. Is it just getting use to the changes? Or do i need to change something?

 

Does your afr clean up better driving slowly?

Damn autocorrect

 

It seemed like it was rich below 20 inhg and above 10inhg maybe and anything in between dang near topped out

 

All of those pics were right around 40 mph btw

 

Hmm well ltft are moving correctly. Not sure if I want to trust your afr gauge.