More Boost,Bigger Turbo=Same Power *Solved*
08-17-2007, 02:54 AM
#11
1.0 BAR
Thread Starter
Join Date: Mar 2007
Posts: 247
Re: A World First: More Boost,Bigger Turbo....
Getting MegaSquirt Fitted today!
Its the Standerd Turbo Computer With Perfect Power SMT6 piggy back. Now that i look back.
The car is running alot safer(AFR better Controled) But its making the Same power(like 5kw more maybee)
Then it did on the standerd Computer so Piggy back has been awaste of time! pIggy back getting Ripped out Megasquirt STD alone going in
Its the Standerd Turbo Computer With Perfect Power SMT6 piggy back. Now that i look back.
The car is running alot safer(AFR better Controled) But its making the Same power(like 5kw more maybee)
Then it did on the standerd Computer so Piggy back has been awaste of time! pIggy back getting Ripped out Megasquirt STD alone going in
12-16-2007, 09:04 PM
#13
0.0 BAR
Join Date: Aug 2007
Posts: 44
Re: A World First: More Boost,Bigger Turbo....
I see you are trying for 12-13 seconds, its never gonna happen with that turbo, your car is peaking late and your power is dying out to quickly,
1) sumfing is wrong
2) get a bigger turbo
this setup will never run in the 13's
1) sumfing is wrong
2) get a bigger turbo
this setup will never run in the 13's
12-17-2007, 09:19 AM
#14
Administrator
Join Date: May 2005
Posts: 78
Re: A World First: More Boost,Bigger Turbo....
Originally Posted by Schwitzer Turbo
Meqasquirt was fitted and the HP Propblem solved, just thought id Finilize this Post!
MAF was holding the car back.... go MEGASQUIRT!
Case closed!
MAF was holding the car back.... go MEGASQUIRT!
Case closed!
its a very simple and easy mod:
12-18-2007, 04:25 AM
#15
1.5 BAR
Join Date: Jul 2007
Posts: 752
Re: More Boost,Bigger Turbo=Same Power
+1 to what he said, except if you want flat torque, flat boost isnt enough.
you want to tune to the same afr across that band, say 11:1 or something, and up boost in the poor flowing top end until pulsewidth is directly proportional to rpm. i did a sketch as a suggested approach for a high comp bmw guy whos concerned about response and wants some extra go.
black is boost, red is future torque, blue future power.
because the engine stops flowing in the top end you can prop it up somewhat with more boost there to get the same in cylinder pressures. provided its intercooled and the exhaust housing isnt too restrictive it shouldnt knock any more up top than anywhere else at the same torque.
if your engine flows well at high revs naturally like many of these hondas, then just flat boost will be enough.
fred.
you want to tune to the same afr across that band, say 11:1 or something, and up boost in the poor flowing top end until pulsewidth is directly proportional to rpm. i did a sketch as a suggested approach for a high comp bmw guy whos concerned about response and wants some extra go.
black is boost, red is future torque, blue future power.
because the engine stops flowing in the top end you can prop it up somewhat with more boost there to get the same in cylinder pressures. provided its intercooled and the exhaust housing isnt too restrictive it shouldnt knock any more up top than anywhere else at the same torque.
if your engine flows well at high revs naturally like many of these hondas, then just flat boost will be enough.
fred.
12-18-2007, 10:43 AM
#16
Administrator
Join Date: May 2005
Posts: 78
Re: More Boost,Bigger Turbo=Same Power
Originally Posted by fe3tcourier
+1 to what he said, except if you want flat torque, flat boost isnt enough.
you want to tune to the same afr across that band, say 11:1 or something, and up boost in the poor flowing top end until pulsewidth is directly proportional to rpm. i did a sketch as a suggested approach for a high comp bmw guy whos concerned about response and wants some extra go.
black is boost, red is future torque, blue future power.
because the engine stops flowing in the top end you can prop it up somewhat with more boost there to get the same in cylinder pressures. provided its intercooled and the exhaust housing isnt too restrictive it shouldnt knock any more up top than anywhere else at the same torque.
if your engine flows well at high revs naturally like many of these hondas, then just flat boost will be enough.
fred.
you want to tune to the same afr across that band, say 11:1 or something, and up boost in the poor flowing top end until pulsewidth is directly proportional to rpm. i did a sketch as a suggested approach for a high comp bmw guy whos concerned about response and wants some extra go.
black is boost, red is future torque, blue future power.
because the engine stops flowing in the top end you can prop it up somewhat with more boost there to get the same in cylinder pressures. provided its intercooled and the exhaust housing isnt too restrictive it shouldnt knock any more up top than anywhere else at the same torque.
if your engine flows well at high revs naturally like many of these hondas, then just flat boost will be enough.
fred.
its exactly what im doing. shooting to make it spool to 12psi then slowly make 14psi at redline, I need to do a bit more tuning and actually pull 7K next time, but you can see the difference in torque comparatively.
12-18-2007, 11:47 AM
#18
Administrator
Join Date: May 2005
Posts: 78
Re: More Boost,Bigger Turbo=Same Power
Originally Posted by fe3tcourier
why is the graph with the much earlier spool so wobbly? (obviously the first hump is the boost spike, but the rest?)
looks good, cant wait to see the finished version :-)
looks good, cant wait to see the finished version :-)
the first graph was on the stock ecu and ignition. the second "wobbly" one was after upgrading to Megasquirt and a coil-on-plug setup. the spark map is anything but ideal, but I made some pulls just to play. I'm going to spend some time on a loading dyno this spring to tune the map up, you can also notice the spike in my boost, which I tuned about 5 minutes before strapping down on the street.
12-20-2007, 05:31 AM
#19
1.0 BAR
Thread Starter
Join Date: Mar 2007
Posts: 247
Re: A World First: More Boost,Bigger Turbo....
Originally Posted by Braineack
how does you boost log during your pulls? Looks like it peaks and then drops off fast? Are are making boost and losing it just as quickly? You're HP would increase significantly if you can keep your torque from falling. If boost dropping off is the case, I suggest moding your megasquirt to run a boost solenoid and tune that ---- flat to redline.
its a very simple and easy mod:
its a very simple and easy mod:
12-20-2007, 10:47 AM
#20
0.0 BAR
Join Date: Nov 2006
Posts: 0
Re: A World First: More Boost,Bigger Turbo....
Originally Posted by Schwitzer Turbo
The boost goes to 1.5 bar and Stay's Exactly there....
He's saying rig the megasquirt to control boost like an EBC, well not like because that's exactly what it would be.
You're turbo is fine, I don't know how circleburner answers every question he responds to incorrectly, you think by now statistically he could have been partially right.
Schwitzer it'd be nice if for once you let us know everything that is on the car and what you have done to it, but don't say "okie" when you do it.
