Went and dynoed today. It was a very nice day. Temps were around 60s-70s.

I had a boost spike problem. My boost would go to 10.5psi and hold.

My car did.
443.5hp SAE corrected
276.7tq SAE corrected
11.5:1 a/f ratio
Timing was pretty low also.

We couldnt really tune for more power due to the crazy spike we were getting. The wastegate would hold 6psi perfect until vtec came on, then it would spike 3psi up and continue and hold at 10.5psi. Stock map sensor was plugged in also.
REMEMBER 6psi spring, so the wastegate would open, but when vtec came on it couldnt hold the exhaust gas..

Here is a video. Will scan plot soon.
http://www.itr81.com/hosted/dyno123004.MPG






Modified by Jordo at 2:51 PM 12/28/2004

 

443whp @ 10psi?

**THUD**

 

wow, that **** is nice props

 

WOW! , thats sick dude.

Are you sure it didnt spike more than 10.5psi? seems like alot of power, but who knows. ive seen crazier ****.

 

holy ****... nice numbers Man. Looks like the work has paid off

 

God damn...That's one sick Type R

 

WOW! Congrat's man. The car looks great and those are some next level #'s.

any idea why it's spiking?

 

i didnt look that close, i edited. lol.

 

ahah, I moved the reply and then yours was gone, so I just deleted it.

 

what turbo is this on? Were was your timing at?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr206 &raquo;</TD></TR><TR><TD CLASS="quote">WOW! , thats sick dude.

Are you sure it didnt spike more than 10.5psi? seems like alot of power, but who knows. ive seen crazier ****. </TD></TR></TABLE>

postive, datalog read only 10.5 and i had a stock map sensor plugged in, so it couldnt go over 11psi.

Timing was low, 7psi at 18degrees timing..

 

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

postive, datalog read only 10.5 and i had a stock fuel map plugged in, so it couldnt go over 11psi. </TD></TR></TABLE>


Map sensor. not fuel map. And ive went 12psi on them already.

Can you post the datalogs? I would like to see the whole **** and shanbang. Sounds like awesome numbers though. Also please post the dyno sheets.


Also you cant really say it spiked , becuase it held boost. I bet it will stay that way . My 40mm was always a few psi higher then the spring.

 

Oh my Christ.

x 297459475249572495723495872785

Was it worth it?

 

 

Noice

 

Yeah my **** spikes to about 10.5 also.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr206 &raquo;</TD></TR><TR><TD CLASS="quote">Map sensor. not fuel map. And ive went 12psi on them already.

Can you post the datalogs? I would like to see the whole **** and shanbang. Sounds like awesome numbers though. Also please post the dyno sheets.


Also you cant really say it spiked , becuase it held boost. I bet it will stay that way . My 40mm was always a few psi higher then the spring. </TD></TR></TABLE>

my tuner would have to post the datalogs.

thing was no matter what spring i put it, it still went to 10.5

dyno is posted

 

Were you watching the boost on some kinda external gauge as well? What did it say?

 

car is sick

 

hondata datalog or though his wideband unit, i dont know how exactly he was monitoring it.. but thats what it said on the computer..

my defi d gauge reads around 10-12psi. if that matters

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr206 &raquo;</TD></TR><TR><TD CLASS="quote">WOW! , thats sick dude.

Are you sure it didnt spike more than 10.5psi? seems like alot of power, but who knows. ive seen crazier ****. </TD></TR></TABLE>

Stock map, so the car wouldn't have run over 11 psi

 

i'm feel'n it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tthame1 &raquo;</TD></TR><TR><TD CLASS="quote">

Stock map, so the car wouldn't have run over 11 psi </TD></TR></TABLE>

I asked becuase i have read over 11psi on a stock map

that big jump aslo has to do with the tuner not setting the vtec to the correct spot to even out the curve.

 

Nice numbers Jordo. I can't wait to see what mine is putting out. We will definately have to go out on the streets one night.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jordo &raquo;</TD></TR><TR><TD CLASS="quote">
my defi d gauge reads around 10-12psi. if that matters </TD></TR></TABLE>

I would trust the defi gauge over the hondalogger. The stock map sensor won't see any boost over its voltage scaling.

I've seen this happen alot. You could set boost cut at 11psi(end of the stock map's scaling) and then hit 14-15psi w/ out boost cut kicking in cause the map sensors voltage maxed out before what the ecu looks for to engage boost cut. Hondalogger will only say like 10psi.