corno

According to the Odbii port the car peaks at 1.1 bar and holds at 1, today I've downloaded the map and compared it to a standard one and they are both the same. Correct me if I'm wrong but standard the car boosts to 1 bar?

Could it be that the obdii is not reading 100% true or maybe a manual boost controller?

The car has a catback, panel filter, cosworth gaskets, rcm low temp thermostat arp head studs, exedy sports clutch, and a pressure test that said it was all okay so that seems a little reserved to boost or just a safe amount of boost to push?

Turbotits

iTrader: (2)

Has it been mapped? Sounds like a standard map.

corno

The car was advertised as mapped but there's no proof of it or receipts etc. so I'm going to guess it's standard, I'm just intrigued as to why a boost gauge reads otherwise unless it's calculating it wrong!

Gambit

iTrader: (6)

Sounds like a std car that had a bit of work done after a headgasket failure but still running std map

edit: only other possibility i can think is that it has racerom fitted with dual maps. Handy tested though, with ignition on put accelerator to the floor and then double tap the rear heater switch. If the engine light on dash then flashes repeatidily for a few seconds then its switched maps

jimbob9875

iTrader: (1)

Hi

Have a look at the target boost table in your map.

I am pretty sure iirc that standard v10 sti boost target is around 1.1 bar when all other parameters have been met.

corno

I think your right in that the work has been done due to HG failure. Forgive me for a silly q, but does having a pressure check on the engine give it an all okay for the pistons? Or can they still fail?

Running standard boost at 14.5 psi in the target boost table, 14.5=1 bar, so why does my gauge boost peak 1.1 bar and hold at 1?
I'll do some logs later on and see if I can get anything meaningful from them.

Steve's Sti

iTrader: (2)

it will be running lean (standard) map tailing off at the end due to the turbo also

jimbob9875

iTrader: (1)

Hi

A pressure test or (leak test) tells you how well the cylinder is sealing and can give an indication of how good or bad parts are but its no guarantee.

Also iirc with the boost pressure ( i could be wrong so hopefully one of the specialist can confirm) as you have a better flowing filter and exhaust it can give you a slightly better peak pressure from turbo and will maybe show as a boost error - within a certain percentage this is no problem and not something you need to worry about - if you use learning view in romraider it should give you an indication if the ecu is adjusting any timing or fuel for this extra boost.

corno

Did a compression check over the weekend and off the top of my head they were around 130, tried a dab of oil in each cylinder and no increase so good seal for now.

I'm still intrigued and concerned as to why my boost gauge says 1.1 bar on a standard map.. I think that fitting an actual boost gauge/oil temp/oil press pod is next on my to do list followed by an uprated pick up pipe. Just dreading it going bang. Joys of 2.5!