Megasquirt on a 1.6 SC
#1
Megasquirt on a 1.6 SC
Hi Guys,
Is anyone running a Megasquirt on their 1.6 JRSC setup? I'm currenetly running a Jackson rising rate FRP, but my car is running out of fuel at around 7psi and 4000rpm...and I was thinking that rather than adding more fuel pressure, perhaps I could fix the problems with a little better control...
Any thoughts are appreciated.
Thanks!
Is anyone running a Megasquirt on their 1.6 JRSC setup? I'm currenetly running a Jackson rising rate FRP, but my car is running out of fuel at around 7psi and 4000rpm...and I was thinking that rather than adding more fuel pressure, perhaps I could fix the problems with a little better control...
Any thoughts are appreciated.
Thanks!
#4
I just got a MS on my JRSC car and its defiantly worth it. Im running about 7.5psi of boost and with a powercard setup was seeing 13 afr in full boost before. Now i have bigger injectors and am able to get lower afrs and it pulls much better. Also you can removing the afm which will help a bit too. Going from the FRP to the MS will be a better improvement than what i got.
#5
Thanks guys, that's what I thought...good, so I am on the right track. I'm looking for drivability not power to start with...but having the potential for unlimited tuning is also nice.
patsmx5: I noticed you're running an MS2...and almost everyone else is running an MS1...can you enlighten me a little as to why you chose that? I've done a lot of reading and from what I can tell, it would seem the most common deciding point is complexity....
...and yes, at some point I think I just might swap the belt driven supercharger for an exhaust driven one...
patsmx5: I noticed you're running an MS2...and almost everyone else is running an MS1...can you enlighten me a little as to why you chose that? I've done a lot of reading and from what I can tell, it would seem the most common deciding point is complexity....
...and yes, at some point I think I just might swap the belt driven supercharger for an exhaust driven one...
#8
But after 1.8L injectors the car starts to drink gas. Is what I have heard. Corkey Bell said you can adjust the afm some for the larger injectors.
But no matter what form of management you use the 1.6L injectors will only flow 6-7 psi.
The 1.8L will work from 8-9 according to you setup. If you have a very free flowing setup. You can probably only get 8psi. But you need headers, high flow or no cat, & exhaust.
But if you are not upgrading and just planning on running 7 1/2 psi. I would just get 1,8L injectors.
For more info on injectors, read the "All your turbo questions in one" Stickey under DIY SECTION.
Good LUCK!.
#9
Thanks guys, that's what I thought...good, so I am on the right track. I'm looking for drivability not power to start with...but having the potential for unlimited tuning is also nice.
patsmx5: I noticed you're running an MS2...and almost everyone else is running an MS1...can you enlighten me a little as to why you chose that? I've done a lot of reading and from what I can tell, it would seem the most common deciding point is complexity....
...and yes, at some point I think I just might swap the belt driven supercharger for an exhaust driven one...
patsmx5: I noticed you're running an MS2...and almost everyone else is running an MS1...can you enlighten me a little as to why you chose that? I've done a lot of reading and from what I can tell, it would seem the most common deciding point is complexity....
...and yes, at some point I think I just might swap the belt driven supercharger for an exhaust driven one...
#10
But the MS1 is more capable than I plan on using. And that is what DIYAutotune uses for our cars.
As far as injectors go, sooner or later adding pressure will lock up your 1.6L injectors.
You should be fine with the 1.8L injectors.
#13
There is alot more to it than just psi.
I'm referring to how much hp the injectors will support. There have been a few people people claim that the 1.8L injectors ran out of fuel at 9psi with the M45. But they had their cars modded out. Or maybe had a stock fuel pump.
I personally think that The 1.8L would probably be fine with the right fuel pump at 9psi, with exhaust for the M45. It might be close though. You would need a Wideband O2 to be for sure.
But they would defiantly support the horsepower you will be pushing at 7-8 psi.
Last edited by Toddcod; 02-21-2009 at 10:00 PM.
#14
Ok...that's what I was thinking too...less restriction on that side will (potentially) lower boost...or conversely something lke a plugged cat may cause an interesting increase in boost and corresponding drop in power!
I understand that there is a lot more to forced induction than just psi (VE comes to mind)!
Are you running a stock fuel pump on your setup(s)?
I understand that there is a lot more to forced induction than just psi (VE comes to mind)!
Are you running a stock fuel pump on your setup(s)?
#15
Ok...that's what I was thinking too...less restriction on that side will (potentially) lower boost...or conversely something lke a plugged cat may cause an interesting increase in boost and corresponding drop in power!
I understand that there is a lot more to forced induction than just psi (VE comes to mind)!
Are you running a stock fuel pump on your setup(s)?
I understand that there is a lot more to forced induction than just psi (VE comes to mind)!
Are you running a stock fuel pump on your setup(s)?
#19
Elite Member
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Join Date: Jun 2007
Location: Overland Park, Kansas
Posts: 5,360
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Missed this thread earlier, but I tuned a mspnp on a 1994 1.8 M45 jackson kit. We haven't had it back at the dyno yet, but with a 224,000 mile motor on 8psi, crappy p-p-p-p-powercard!!!!! Header, high flow cat, catback, put down 160rwhp. I expect with MS and its current tune along with WMI around 170rwhp, maybe a slight bit more... It'll pull a bone stock 2004 Mazdaspeed MX5, and does pretty good against my Mazdaspeed6 too!
#20
Tour de Franzia
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Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
I'm trying to get a friend to put MS on his 1.8 with an mp45 but he thinks "that's too much money for 20whp." He doesn't understand what he's missing in drivability and awesome curveness.