Current (not final) results from the LM480. A phantom det (apparently some engine resonances making the det sensor think det was occuring) issue was discovered, which pulled loads of timing from Martyn's map. So the current map shows now 460 ft-lbs at peak boost of 1.5 bar and 457 BHP at 1.3 bar. Don't know about Iain, but I was amazed
May also test a bigger air intake to check if the current one is maxing out - it seems the std cams may be maxing out.
Massive thanks to Mervyn@EcuTek, Bob Rawle and Iain for looking at it and spotting the problem, and to Bob for taking things forward in light of the phantom det.
Massive thanks again to Alan and Martyn at Enginetuner for the engine build and his map.


As the maps are "locked", this is a new map by Bob in order to take things forward. Thanks Bob.

 

Nice one Stan - glad you got there in the end

 

Cheers Tim, nearly there !
Iain thinks there may be another 20-30BHP when the P Det is sorted without further changes to the map. That would be the very top end of what some people are saying is compatable with reasonable engine life, which was my main aim, rather than squeeze the last BHP out of it. There is talk of trying a larger air filter to make things easier.

 

You may find that simply relocating the Knock Sensor has a very positive effect.

 

Mine had to be relocated - it was very apparant when JGM was mapping it on the rollers: ecu pulling timing due to "det" but none in the detcans...it's a common problem apparantly

FYI my turbo has been tweaked and now has some of the LM500 parts...so it's now an "LM480+". Engine rebuild nearly finished, so should pick it up when I'm back in the UK in a week's time, some running in, then map tweaking in 3 weeks or so

The icing on the cake will be a return to Iain Litchfield, hopefully early next year, for another update to the turbo

 

The ongoing work involves identifying and then determining if a solution is possible by amending the relevant map settings in the rom, there are also some other opportunity's to improve this car which can/will be implemented. The LM480 flows air effortlessly, there was no problem holding set boost flat to the red line however due to a variety of things, but mainly to minimise the interference from the PD, I tapered the boost and then obtained the power by optimising other settings.

I have been investigating the PD aberration in detail, my own car suffered from it badly to the point it was not nice to drive at all.

For my car relocating the knock sensor resolved it whilst maintaining enough sensitivity to allow the ecu to react to real det, however its not a cart blanche solution and it would be unwise to assume that every car suffering will only need to have the sensor moved. There could be real issues which would be exacerbated to the point of engine damage.

You can clearly see some of the PD effect in the graph Stan has posted, the 5k to 5k5 rpm area is particularly sensitive.

The car is now v quick on the road, as stan says there is potential to get a bit more from it and also to improve the low end response as well once the PD issue is dealt with. Benchmarking the response the turbo makes 1 bar at 3000 rpm from 2k rpm in 4th foot flat.

cheers

bob

 

I don't believe that would be the case... as the failure of the NPS causes havoc full stop, or so I believe. It would of been seen with delta dash quite quickly if apparant before. I suspect the failure of the switch has coincided with the recent changes.

Hope you get it all sorted mate and look forward to the final results run.... just as long as you don't get more than my 398bhp! roflol

 

when my nps broke, it deffo showed up when ecutek had a look at the info...

 

any news on the billet update?

 

I am itching to get one of these bloody turbos!!!

 

me too, but having heard of MKII version I'm looking forward to some info on these

 

My LM480 has been upgraded to be what is probably best described as an "LM480+". It incorporates most of the latest enhancements Iain has devised, but not the billet wheel (yet ).

Also now have 14mm studs and cosworth head gaskets, and the map will be tweaked tomorrow, so I'll let you all know how it gets on...hoping for around 500bhp and similar-ish torque on 10% meth

 

So...after some frantic running in this week - 500 miles in 3 days - the rebuilt engine and revised LM480 turbo met up with JGM at Subaru4You for the map tweaks.

Running 10% meth, and mapped for 1.7 bar peak, it responded really well to timing. We chickened out, and stopped adding more advance, once it hit 516bhp and just short of 490 ftlb of torque

On the road, 1 bar is reached at 3000rpm, and 1.7bar just 300 rpm later - mmmm, lively

To say I'm pleased is the understatement of the decade

I cannot thank Iain Litchfield, Len and Marc at Subaru4You, and Simon enough - it's a simply awesome drive now

Hopefully that's it for a while now...well apart from, that is, a visit to Iain's next year for some more turbo tweaks

 

Great results Tim.

Just leave the flaming thing as it is and enjoy it.

 

 

nice to see you again Tim

The boost control btw is deliverate.. it would run flat boost profile when I asked it to but the heat through the midrange just screwed top end power on the dyno and it looks worse than it is with that scaling on the graph.. fair bit of torque and power etc.. the boost is flat on the road at 1.7bar so possibly higher torque than the graph shows.

Simon

 

Well done Tim !
Fantastic results

 

Brilliant work guys! Really pleased for you Tim.

Power curve and torque look superb it must feel great on the road.

Kind regards

Iain

 

I wonder what the LM480 would do with a forged 2.0 or 2.1, or is it better suited to the 2.5???

 

Cliff,
Shall I bang a LM500 Billet on my JDM 2ltr and see what it does! It would be a shame not to make use of the injectors I have.

It is tempting in the name of testing and development!

 

It'll go "BANG", I would guess

 

Rob North spanked the backside off his Tracktive OE JDM 2ltr at this level (running NOS as well as Meth).

Anyway... I like to push the boat out! Fortune favours the brave!

 

Why would it?

Running uk 03 sti engine with md321v at 502bhp in my daily drive and cannot break it despite trying v hard.

Would be interesting to compare to see if twinscroll worthwhile at 500hp

 

Hmm...I think JGM's JDM STi has a standard bottom end, and that's pushing out a smidge over 500bhp on a 321V...so, yeah, go for it Shaun

 

Beat me to it Simon

 

Standard uk sti non-twin scroll 1.8bar to make 502bhp but now running 1.9bar as I got bored on way home last night.

 

lol at 1.9bar Simon...dunno why I thought it was a JDM since I knew you had a 321V

 

 

I will use the injectors soon, promise. Just trying to decide, forged 2.0, 2.1 or 2.5. Cant leave mine standard as I know it will go "bang"

 

Cliff,
My injectors.... not the ones you have.

Built 2 or 2.1 imo, if you want the better reliability (all things being equal).