Tipot

It's a vibrant filter. Seems to work pretty good

Tipot

He doesn't think it's valve train related at the moment . Which is good to hear from him . Going to recheck all the grounds . Clean them and make sure nothin weird with them. Also going to try the NGK
Plugs .he is pretty sure it's an ignition problem

ajrothm

In regards to the air filter.... It's not that the filter is too small or material doesn't flow enough... It's the design of the end cone (if it has one).. The flat plate on the end cone sits right in the inlet path to the turbo... If it's too close to the turbo (which will happen with a short filter like that) it will cause some crazy turbulence/restriction.

If your filter is just flat on the small side and has no "inner cone filter" you are good to go..

I'll post some pics in a bit to describe what I'm talking about. I chased my tail on the dyno for 2 days looking for a lot of missing hp...

Once again, this has nothing to do with your missing problem, which I think is ignition related somehow.

Tipot

Back again from the dyno.
Still got pretty well the same story.
First got there put in the new NGK plugs gapped them at 15

First pull no boost controller (9psi)


12.5 psi

15psi

The song goes on lol .anyways we let things cool down .gapped the plugs to 10 . And tried again at 12.5psi. It did the same thing we saw at 15psi.

Going to try a set off truck coils this week end. Really starting to run out of ideas. BTW I did clean all the grounds. And made sure everything was tight

chrisgo

Looks like your issue starts at 46-4700rpms on every graph. I still agree it's something ignition related. Are you sure there is not something in your tune such as knock sensors telling it to cut spark? With plugs gapped at 10thou, I would hesitate to say it's a plug indexing issue. What is your IAT and other data during the pull at that rpm range?

skull

i may have missed it but why are you gapping them so low? the only people ive seen gap a plug at .10 make 3000-4000 hp and run a mag setup. it sounds like a .22 rifle being shot off when they do test runs haha

we made 1200 flywheel (980 wheel thru a th400) on ngk tr7's gapped at .27 with 25 lbs of boost and 11* of timing. with stock truck coils btw and 110 oct.

Tipot

Just wanted to see if it would clear up the misfire at 15psi . I found some truck coils .going to dyno again Saturday. Might also try to lower the timing see if it helps we are at 14 degrees

inspector12

Me no likey the cam to much, and don't know why they put so much advance in it either. Push rods need to be MIN a 3/8's chromoly. GL! Looks like there could be multiple issues. I'm sure Brian can put you on the right track.

Tipot

I agree with you on the cam 100% so far lol . Today we gave up on trying to make more power. I'm going to drive the car at 850whp 880trq
We made that at 15psi with 12 degrees timing and 10.2 afr it was the only way to make a pass with out misfire . I want to enjoy the car on the street.

From what we tried today. I'm thinking the cam is too aggressive for my setup. We have to detune the engine to make it not sputter. As soon as you try to make it leaner it misfires. More timing it misfires. I regret not doing my research more when buying my cam .lesson learned .plan is to drive it and see how the whole new setup works on the street .if I don't run into too many issues I will be calling Brian for a new cam after the summer. For right now it should be safe

SBCGENII

Get a back pressure reading pre turbine. If that checks out then get a milder valvetrain setup.

Blackonblacksls

My guess is 3/1 on the back pressure.

Tipot

What's the best way to measure the back pressure. I've never done it

SBCGENII

Same as getting a boost reading. Except it is hot so you need to run copper line for a bit.
http://ls1tech.com/forums/generation...ure-gauge.html

Tipot

Well here is 98% ready
I have one small exhaust leak to fixes and street tuning tomorrow

blackmachdown

Damn she is looking sexy! Best of luck tomorrow!

ajrothm

Looking good!!

96TTdodge

Looks good. What size wheels and tires are you running out back?

Tipot

16x10

315 45 16 MT

96TTdodge

Maybe Im missing them, but I dont see that size on MT website anywhere.

Tipot

I think they are discontinued :$