jarvis199

ok guys i seem to have a serious issue with my car...

it runs great, pulls hard, but the hp seems to FLATLINE at 300ish...

the last 2 dyno sessions i made were on two very different setups, and made nearly identical hp, on way different boost levels... here goes...

dyno run 1:
-hahn 16g
-homemade equal length mani
-full 2.25 exhaust
-stock cam
295whp 255wtq @20lbs falling to 17 by redline

dyno run 2
-turbonetics t3t04e 57trim .63 hot side stage 3 wheel
-drag mani
-open 3" dp
-59300 cam
305whp 288wtq @ 25lbs falling to 20.5 by redline

on 20psi my car only traps 112 and im not sure what the problem is, on both of these dynos we couldnt get the hp to move much, we could smooth the map up but thats about it...

ive been through 2 different mani's, 3 turbos, 3 intercoolers, 3 exhaust setups, and 2 cams trying to figure this out, ive switched from 2.5 bar map to 3 bar also, ive added timing, taken it away, leaned it out, etc. with no help...

hte ONLY thing i havent done is run it without a filter, im running one of the 2.5" inlet atp turbo jobs and tis ran like a cold air...

anyone have an insight??? i mean 112 mph @20psi seems like poo to me... what kind of whp is that out of a 92 cx hatch wth a 200 lbs driver??? lol

my times were the following:
2.11 60
5.6 330
8.4@90 1/8
12.73@112 1/4

it was a 91* day out and i was running 5* timing @20 psi on race gas, i didnt really have the chance ot add timing i jsut wanted to make sure thecar held together...

these runs were on 215/60-14 bfg's @18psi ...







Modified by jarvis199 at 2:46 PM 3/29/2007

BlangBlangTEG-93'

You need to post up your motor setup. That would help out alot.

Semnos

WHy are you comparing PSI with MPH?
your HP reflects on the trapspeed.

Take off the filter and see what happens.

jarvis199

engine setup is the following:
d16z6
-vitara pistons
-tt rods
-arp headstuds
-25k on the rebuild
-155 psi on all cylinders
-new bearings, gaskets etc with rebuild

took the filter off for hte first time since install this turbo and noticed a large amount of oil in the pipe!!! and then noticed how how my oil return hung, fixed it and fixed the oil problem...

could that have something to do with the lack of poewr?

LoseRPunKx182

uh oil in your pipes is definitely not good it can cause a turbo to go bad quick. what injectors are you running.

jarvis199

precision 680cc injectors...

i fixed the oiling problem and it seems to be fine, car seems to run a lot better

sohc_turd

I'm not familiar with mitsu turbos but what does the exhaust housing compare to a t3 counter part?

I know on my setup the most HP i could make was 322whp on the .48 housing.

093turbo16

iTrader: (2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sohc_turd &raquo;</TD></TR><TR><TD CLASS="quote">I'm not familiar with mitsu turbos but what does the exhaust housing compare to a t3 counter part?

I know on my setup the most HP i could make was 322whp on the .48 housing. </TD></TR></TABLE>

The super 16G from hahn comes with a 10cm housing.. so it is comparable to a .73 a/r

jarvis199

yea its a good sized exhaust housing, and the t04e has a .63 hot side, so iono, it seems to be running much better after cleaning hte filter and getting rid of hte oiling problems..

i am also going to look into an ebc


going back to the track tonight to see how she performs!


Modified by jarvis199 at 10:22 AM 3/30/2007

blinx9900

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jarvis199 &raquo;</TD></TR><TR><TD CLASS="quote">
dyno run 1:
-hahn 16g
-homemade equal length mani
-full 2.25 exhaust
-stock cam
295whp 255wtq @20lbs falling to 17 by redline</TD></TR></TABLE>
on this set up your limiting factor is the exhuast system


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jarvis199 &raquo;</TD></TR><TR><TD CLASS="quote">dyno run 2
-turbonetics t3t04e 57trim .63 hot side stage 3 wheel
-drag mani
-open 3" dp
-59300 cam
305whp 288wtq @ 25lbs falling to 20.5 by redline
</TD></TR></TABLE>
on this set up your limiting factor is the drag manifold, can you use the equal length on this set up?

jarvis199

their is NO way a drag manifold is limiting me to 300, their are SO many setups just like mine that are making 400whp on a drap mani... their have been many 300+ setups on drag manifolds...

i had an equal length on the car that i made, and switching manifolds provided NO power

blinx9900

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jarvis199 &raquo;</TD></TR><TR><TD CLASS="quote">their is NO way a drag manifold is limiting me to 300, their are SO many setups just like mine that are making 400whp on a drap mani... their have been many 300+ setups on drag manifolds...

i had an equal length on the car that i made, and switching manifolds provided NO power </TD></TR></TABLE>


sorry i just know the b-series drag mani is not so good, figured it be the same on a sohc, i should not have assumed.

thermal

If you are using a flex pipe, you might have been issued a version that has internal braids... those things will expand and cause major exhaust restriction....

93supercoupe

i say use the equal length mani, and the 3inch


When u use race fuel U NEED to advance timing or it will hinder power not help it.

jarvis199

got ya, thanks guys, i am not running a flex joint in my exhaust so i know thats not it...

new times for tonight on the same boost levels:

2.1 60 ft
8.2@91 mph
12.5@113 mph

all on bfg's w/14psi...

still seems to me a low trap speed for 20psi??? what kind of whp should i be making out of a cx hatch that traps 113mph???

sohc_turd

I think traps look similar to mine if i recall correctly. Its been awhile since ive looked at the time slip but i would trap 115mph, with similar power. This was actually at 25psi and running on 205/50/14 BFGs.

How are those 215/60/14s hooking up? i'm gonna get me some of those in a couple of weeks. Have you tried running them in the 10-12psi range yet? Even though the 205/50/14s where way too small... i found that they would really hook up best at about 10psi.

jarvis199

they hook ok, i honestly think my 330 foot is what hurts me the most, my 60 is reasonable, but my 330 sucks, i shift 2nd and it spins pretty bad, but terrible, but bad...

im going to have to invest in some 24.5x8x14 soon... im scared ill break someting on them tho lol

RedEj8

I think you need a bigger exhaust..Get a 2.5 or 3" mandrel bent exhaust made and you could possibly see 10+ whp and faster spool up.
Edit..Just reread and didnt see that you ran an open DP on the 2nd setup...So yea im lost.

b18sihatch

even tho the drag manifold could make 400whp, i do think your spool and whp times will be hurt by it.

i feel you could stand to gain 50+hp with a equal length not to mention faster spool times

jarvis199

im working on it guys, i NEED to find what the problem is here, ifeel like im being cheated out of hp lol...

the car runs SOLID tho, compression is 155 solid all across, doesnt use oil, so im lost!!! 113 mph traps in a 2400 lbs car is what kinda of whp? like 280? thats not much for 20 psi on a 57 trim!!!

could i have accidently put a d15b7 intake manifold on my car without knowing??? it LOOKS like a z6 mani, but who knows! i jsut dont know what to do at this point lol...

KeyserSoze

Man this is a bit confusing to me as well. I would start not with the variables that are different now (ie turbo, mani, etc) but with the variables that are the same from the previous setups. Like you said the im could be one. Check all the other ones as well, you said you changed the ic, I would presume the ic piping is all good. Have you checked the wg and bov's?? Are they in proper working order? Of course they are working because you are regulating boost somewhat but are they working as they should? You changed cams, did you set the lash correctly? Dunno, just tryin to help you brainstorm a bit. GL bro.

jarvis199

thanks for the help, valve lash is good...

bov and wg are working correctly, my ic piping is all 2.5" and has been changed many times to make sure its flowing at its best

TurboJesse

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18sihatch &raquo;</TD></TR><TR><TD CLASS="quote">even tho the drag manifold could make 400whp, i do think your spool and whp times will be hurt by it.

i feel you could stand to gain 50+hp with a equal length not to mention faster spool times</TD></TR></TABLE>

i doubt it...and since when does a tubular manifold spool faster than a log?

why are you losing so much boost? wastegate spring too small? any boost leaks?

093turbo16

iTrader: (2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboJesse &raquo;</TD></TR><TR><TD CLASS="quote">

i doubt it...and since when does a tubular manifold spool faster than a log?

why are you losing so much boost? wastegate spring too small? any boost leaks?</TD></TR></TABLE>

ding ding ding.. get a damn ebc and try again.

b18sihatch

i feel a gain will be seen with a tubular manifold upgrade over Log. spool is better with log but if WHP is his goal there are other variables to take into consideration when changing from log to tubular to help increase your spool times to insure a spool decrease if any minimual, will be had, thus increasing your whp over log