Running a 2.5L inline 6 cyl on a MS-1 V3 with MSnS-E 029Q2.
I am going from 17# to 42# injectors. I want to get my off-boost map working so I can drive the car limped. However, 6 cyl, 6 inj, 42# injectors and 14.7 stoich equals a 6.3ms req_fuel. Too low? Manual says more than 8 less than ~12-15 What can I do? Car need the 42# to make desired HP
New injectors = too low req_fuel?
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Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Forum rules
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
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jakobsladderz
- Helpful Squirter
- Posts: 41
- Joined: Tue Mar 15, 2005 9:08 pm
- Location: Ballarat, Australia
The biggest problem will be trying to achieve a stable idle with the available timing resolution. There's not much you can do WRT injector sizing if you have chosen the injectors based on your max fuel requirements. You must be running some serious boost though...
with the high res timing in MSnSE you should not have too many issues with resolution at low pulsewidths.
if you still have hastles another way (which I consider to be a nasty hack) is to use a rising rate fuel reg to allow for the use of smaller, idleable injectors but to provide enough fuel at high power levels. Problem with this and high boost is that there are not too many fuel pumps rated to handle even 3 bar fuel pressure (~standard) plus 1 bar boost (14.5 PSI), and I gather you would be running much more than that.. Injectors also can behave weirdly if the pressure is raised too high.
with the high res timing in MSnSE you should not have too many issues with resolution at low pulsewidths.
if you still have hastles another way (which I consider to be a nasty hack) is to use a rising rate fuel reg to allow for the use of smaller, idleable injectors but to provide enough fuel at high power levels. Problem with this and high boost is that there are not too many fuel pumps rated to handle even 3 bar fuel pressure (~standard) plus 1 bar boost (14.5 PSI), and I gather you would be running much more than that.. Injectors also can behave weirdly if the pressure is raised too high.
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jakobsladderz wrote:The biggest problem will be trying to achieve a stable idle with the available timing resolution. There's not much you can do WRT injector sizing if you have chosen the injectors based on your max fuel requirements. You must be running some serious boost though...
with the high res timing in MSnSE you should not have too many issues with resolution at low pulsewidths.
if you still have hastles another way (which I consider to be a nasty hack) is to use a rising rate fuel reg to allow for the use of smaller, idleable injectors but to provide enough fuel at high power levels. Problem with this and high boost is that there are not too many fuel pumps rated to handle even 3 bar fuel pressure (~standard) plus 1 bar boost (14.5 PSI), and I gather you would be running much more than that.. Injectors also can behave weirdly if the pressure is raised too high.
Yeah I ran a RRFPR before and I don't like how they react. I think I may just try and up the idle RPM if I have issues - I hope I won't