lt8s, garret t04E 70/84, 3" exhaust, ported intake and throttle body, ported oil gallery and E shaft mod, hugh street port,720/1600cc inj, aeromotive FPR, AN fuel system, walbor 255pump, ASL apex seals, dowl pinned, trust fmic, greddy log exhaust manifold, innovative 50mm wastegate, 93 pump gas tuned for 11.2 AFR at 18spi for a total of 480whp

3 pulls on the dynocomp
1) 8spi hit 415whp 342tq daily setup
2) 14psi hit 471whp weekend setup
3) 18psi hit 480whp
trying to get my dynatek ACR-2 to run with the lt8s then ill get the PWI installed to turn it up

now sence this is the first time i ever put this car on the rollers im going to take it to another dyno soon before i change this setup and do the same 3 pulls just incase

heres a clip to the pull theres a few so take a look at them all

http://www.youtube.com/watch?v=37jm3...3&feature=plcp

 

hot damn

 

Im not a turbo guru but a garret t04E 70/84 seems a little small for that kind of power,well i guess that i was wrong then.........congrats on the numbers that is amazing!Who does the tuning in your car?I need 2 get my setup tune and my guy is from PR and he wont be up here until august and i need my baby running fine before that.

 

Its probably not a To4E or the dyno reads really high( I bet its the dyno).

To4e turbos 99percent of the time have 3" inlet and .60 housings. I have only seen one .6 housing with a 4" inlet(video looks like 4" inlet). I have also run a ton of To4E setups in all trims, and @ 18psi they make 420rwhp.

I once tuned a GT35R that made 700rwhp... Dyno was way off...

 

I asked cause with a 76mm 1.15 Q trim on my bridgeport not fully tuned running pig *** rich we saw 440hp at 19psi last summer and my turbo is way bigger than that.

 

probably a T04Z 70 trim which can do that figure.

what's the issue you are having with the ARC2?

 

i wonder what type of dyno that was tho ... that makes all the difference sometimes .

 

i was trying to run the lt8s leading signal threw the arc2 to the leadings but its not happening so im going to get in 2 dynatek .5 single coils and give it another try.

when i bought this turbo i was told it was a Garret t04E but ill have some time in may where ill be able to pull it out & measure the trims just to make shure
you really have me scratching my head over it now.

i built the car from a roller to now had it tuned over at JPR Imports by Jim and Wilmer Ortiz great guys and special thanks to them. its going back after the ignition and WI get loaded in.

tonight we ran the car on the same dyno after raoul from LRA motorsports came in and went over the settings to the dyno, he did have to make adjustments.

the dyno is a pretty new Dynocom 5000 2WD eddy brake twin 8.5 inch roller chassis dyno. It can handle up to 1250whp and can perform steady state load and inertia testing. This means that you can get your true horsepower level on a single pull and perform various load testing to get the best numbers for the street and track app.

1) 387whp at 8-9 psi
2) 414.2whp/6300rpm 355.6tq at 5950rpm at 14psi
3) 471.7whp/7700rpm 372.5tq at 6000rpm at 18psi

im waiting on the graph to get emailed ill post as soon as i recieve and new vids of this session will be up also after i recieve..

 

you can run the ARC2 via the LT8 single leading trigger to standalone coils(even the stock coils with the internal ignitor disconnected). it will still have to be wired up for waste spark since you only have a single control circuit but you need to set the ARC to for an internal ignitor and wire the coils in series(for waste spark). ignitor output from the arc 2 to negative on one coil, positive from that coil to negative on the next and positive from the 2nd coil to switched 12v.

thing that got me was the internal ignitor setting, the manual that comes with the ARC2 is very vague on what the settings do and they have plenty of warnings about using the wrong setting but offer no help whatseoever on which to use. i had it set to standard coils and got squat from the coils until i flipped the switch, thinking i would fry the ARC2 and coils but nope.

the coils must be low resistance type though, pretty sure the stock coils should fit the criteria but i never did measure the resistance of the stockers and ran some MSD units instead. you can always call Dynatek and ask them, they were pretty helpful when i called.

you also cannot use the launch feature unless you have 2 ARC2 boxes, one for leading and one for trailing both set at the same points. initially i figured it all could be done with a single box but ultimately i don't think it is a good idea using the 2 step with the ARC 2 for this reason(there will be a variance using 2 controllers).

 

il try to get a shot out it this week. would one box be ok for the leading or should i be running two for leading

 

just one box for leading, i don't even think you can get an LT8 with a X4 ignition box anyways so you are limited to waste spark for the leading ignition.

 

re: 415 whp @ 8 psi.

Sure that's not 315 whp. Call me skeptic. What WHP could we expect from a healthy non-turbo'd TII engine @ 7,500 RPM? 200 whp? If then turbo'd, 100% efficient IC, one would expect near doubling the power @ 14.7 psi boost (maybe, if the turbo didn't rob any power). Agree?

If all them #s are valid, that engine is possessed!!

 

not necessarily although that is probably a little high, the E trim actually does put out some decent numbers even under 10psi. but if you notice the gains from 14 to 18 psi you can gauge that the turbo is running out of steam at about 15PSI, 18psi is probably an unecessary waste for almost no gains.

 

Go here:

http://www.turbodriven.com/performan...6_wrsin=92044&

to also see the attached. The red arrows are my input #s.

Notice, for a 2.6 ltr engine, I had to enter 130 for "volumetric efficiency" to get the HP (circled in green) that would translate to ~ 400 whp. If BSFC drops to .55, that HP is met w/ VE of 120%. Are these #s achievable from a non-hemi port + turbo 13B?

 

that is trueeee !!! i tuned a friends car 25 psi bridge ported on e85 and the thing made 437 whp for 2 race nights. then bye bye turbo. it felt like i was pushing the turbo too hard