mrx

Hallo,

we went to the dyno with one of our cars a few days ago and i'am a bit confused about the numbers - seems a bit low for me...

car is tuned @ 14psi
please take a look at the datalog and the dyno sheet... setup is the following:

Stock B16A2 with thicker headgasket CR: 8,2:1
2" Charge Pipe
3" Exhaust but because of the 5bolt discharge we had to go the first 4-5cm of the chargepipe with 2,25" tube.
GT28RS Turbocharger internal wasegate
550ccm injectors
inline fuel pump
no cat

maximum advance at full boost is between: 9-12° depending on rpm (conservative tune) fuel is 93 Octane

spark plugs are 0,8mm gapped BKR7EN-11

Datalog:


Dyno (14psi):


Hope to get some oppinions or maybe ideas because of the low power output.

Thanks
Malte.

boostincoupe

Doesn't look TOO bad to me?

mrx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostincoupe &raquo;</TD></TR><TR><TD CLASS="quote">Doesn't look TOO bad to me?</TD></TR></TABLE>

it's not horrible but i expectet a bit more... maybe something in the 270-280 WHP range and whats a bit confusing me is that the usable rpm range is only from 6k-7k
the thing doesn't make real power before vtec kicks in.

and whats also confusing is the rapid torque falloff after 7k ... seems as if i left off the throttle to early but i can't remember that realy and its also on all 4 dyno runs we made... so it must come from the car but why?!

.nate

The timing numbers you gave seem a little on the low side even for a "safe" tune.

mrx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .nate &raquo;</TD></TR><TR><TD CLASS="quote">The timing numbers you gave seem a little on the low side even for a "safe" tune.</TD></TR></TABLE>

What do you think i should run? i made two runs with 12.25-14.75° and noticed no power gains so i though hitting MBTT but you are right... i was also confused of the low values... but i don't want to risk anything... especialy it was allready 3:00AM and i wanted to go to bed ;-)

village_idiot

get some gsr cams

SSVTi

With that compression you can do more timing mate...17+.
My timing is 20 @ 14psi , but i run with 98octane. That with a stock JDM B16A1 (so compression is 10.2).
EGT is still low w/ that timing.

jmcmil6

i dont think the numbers are half bad.. especially considering the compression, try tuning again and see the difference a lil more boost and race gas will net u.. im sure you'll be satisfied good job though

Cloner

Yeah change out the cams and watch the power jump.Put some type r cams in there.Youll gain alot.


Modified by Cloner at 3:45 PM 7/23/2005

.nate

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Cloner &raquo;</TD></TR><TR><TD CLASS="quote">Yeah change out the cams and watch the power jump.Put some type r cams in there.Youll gain alot.</TD></TR></TABLE>

Dont forget to give those cams more timing! You should be easily over 300

JDMs1eeper

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Cloner &raquo;</TD></TR><TR><TD CLASS="quote">Yeah change out the cams and watch the power jump.Put some type r cams in there.Youll gain alot.


Modified by Cloner at 3:45 PM 7/23/2005</TD></TR></TABLE>

so true, ive seen a 30+whp range increase on boosted cars. b16 stock vs CTR or ITR

blackeg

your static compression is real low, the 28rs isnt exactly a big turbo either. it looks like you are either loosing boost or need to add timing above 7k. your a/f looks perfect

Benjithx

sounds ok for the compression and timing, my 83mm b16 was 9-1compression and had more timing and made 300. so your ok, just push it harder. you will be fine

boosted k20

with that low compression ratio i would run a good 17-18* timing. 9-12* is way too low.
also it looks like u could set VTEC to like 4800 rpms