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Old 02-22-2013, 09:04 AM   #1
Scooby Newbie
Member#: 294644
Join Date: Sep 2011
Chapter/Region: MAIC
Location: Washington DC
2011 WRX Agile Auto
DGM 440whp 420wtq

Default Opensource Gurus! Question

Good morning everyone, I have a quick question that I'm trying to figure out and I figured this would be the first place I would start. I recently switched to a Torque Performance stage 3 tune.

2011 WRX Mods:
Process West TMIC
Forge BPV
Cobb Catted DP
DW65C fuel pump
Grimmspeed EBCS
NGK 1 step colder spark plugs
Grimmspeed AOS
AEM Intake

I'm using a tactrix cable and rom raider to tune my car. The tune that I have on the car now has the boost set to 20psi. My car only sees a max of 18.72 psi according to manifold relative pressure in logs (I would upload them and post but I'm at work and google docs is blocked , I'll post later). I'm also running slightly rich. My question is about boost set in romraider and actual boost seen. When I was just with a Cobb DP, AEM intake and a tune I saw 19.3 psi according to manifold relative pressure (Tune set at 19psi).

This is just for learning purposes, I'm testing for boost leaks tomorrow and getting the map revised once my wideband comes in. What I'm thinking is the reason why I'm not seeing the 20+ psi that the map I have on the car now is set at is because of pressure drop from the larger TMIC? The car pulls great, I get no knock. According to my MAF I'm actually pulling in 20g/s more air at peak rpm than my stage 2 so I've probably gained about 15-20whp over just my DP and intake tune with the stock TMIC. Either that or I'm completely wrong and I do have a boost leak but my car holds that 18.72 psi consistantly at WOT leading me to believe there must be something more because wouldn't the car adjust to get to that 20psi even if I had a very minor leak? I've even driven at partal throttle to see if it holds low amounts of boost consistantly and it seems to. Again just trying to learn. The issue will get solved. I'm bored at work and curious and couldn't find anything on the internet/nasioc.
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