Compressor Surge

iTrader: (21)

For exhaust pressure transducers, we take a coil of copper tubing, and run the sensor at the end of the tubing. Lets the heat dissipate before it gets to the sensor.

denmah

iTrader: (2)

yep thats what im gunna do, i would love to see the BP

denmah

iTrader: (2)

still running the microsquirt and its still working awesome, i will get a video of me foot braking into the anti lag on some really soft settings and building 8psi of boost at 2700 with the 80mm, its awesome

3pedals

iTrader: (3)

microsquirt can do a 2 step?

denmah

iTrader: (2)

yes MS1 can also do it if you have it running ignition

but i have it setup to retard the timing to -10deg and it builds boost nice and holds still on just the foot brake

malarlar

Can the msd 6010 do a 2 step?

denmah

iTrader: (2)

yep, it has an ignition cut 2 step,

not an ignition retard style anti lag, but it works pretty good with a trans brake or foot brake if your stall is high enough.

3pedals

iTrader: (3)

The 6010, and 6012 both have built in 2step, AND an adjustable timing retard ( I think up to 10 degrees). Both activated by +12v like a line loc

Silver Sleeper

iTrader: (7)

once i get tired of the MS1/MSD 6010 combo i am going this route...im going to a t4 88mm and 120lb injectors when i get bored with the GT45..

red 95 t/a

So really with the msd you could wire the 2step and the retard together and pretty much be the same anti lag 2 step like matts using? Or am I looking at it retarded lol

3pedals

iTrader: (3)

that is exactly how I am going to do it. the only crappy part about the msd retard is that I believe it can only retard about 10*(I need to re-read the destructions)

denmah

iTrader: (2)

yeah you guys are correct you can use them both together but it doesnt work like you would expect. it cant retard the timing enough.

you can still build boost on the msd 2 step if your converter and turbo work together. you just wont get any help from the retarded ignition, i tried it.

on the grey notch we can make about 6-8 psi in the 3500 range on the msd 2step, thats a 5.3 with a s475

and on the sunbird we can trans brake up into the 2 step also and build some boost at 3500 again about 10 psi that is a 4.8 with a gt45

malarlar

I noticed on your buddys blue stang with the s480 and glide, on the brake **** sounded like it built up boost quick as ****. What ecu is he runnin??

denmah

iTrader: (2)

it makes about 8psi on the MSD 2 step.
he has DFI for fuel only in the car.

his converter comes up quick and he is flat to the floor.
i always roll into the throttle on my videos to see how the two step is working and how much throttle to use etc.

ill make one soon with the anti lag as it is now, ill foot brake and put it to the wood for you guys and then bomb it out

douglee25

Good thread here.

Can you run through some of the advantages of this type of setup vs. using the factory GM setup and say HPtuners or a similar aftermarket setup?

Thanks.

Doug

denmah

iTrader: (2)

i really dont do anything other than hp tuners and these megasquirt setups.

benefit is, if you try to be super cheap you can have your car running fuel and spark on a lsx this way for less than 400 dollars out of your pocket, and that is sick, datalogging, real time tuning, the freeware will even fix the tune based on datalogs, it is really pretty incredible stuff for free.

stock harness/ swap harness + hp tuners gets pricey
i havent ever swapped in a harness, only hptuned cars with a lsx car already.
its still 100 dollars to license, and if you are big power boosted the maf goes out the window quick and then to do speed density its another 100 dollars.

nice thing is it works really well! and does idle air control, transmission control if you are doing a 80/60e, has alot of great stock driving features.

sometimes can be a pain in the *** as there are lots of tables that are touchy.

the microsquirt i think is easier to tune, more bare bones EFI tables, it can do neat added things like anti lag style two step and ignition cut instead of fuel cut on the rev limiter, support for big map sensors right out of the box.

if you are going to do a non electronic trans it is great, or you can get a trans controller that works great too

efi source is trying soon to be coming out with a ms3x based ecu they are going to budget very cheap for lsx use, and they also want to include transmission control in the ECU itself, this will be really cool but at least the end of the month till i hear more about it.

it all depends honestly i just got done tuning my friends firebird today on teh speed density tune and it did really good, i was really happy with it.

but the ecu and all the **** was already in the car so we just opted to pay the money and license the car and then we can control the trans etc.

i think it depends on your goals for the car really, my fairmont starts up great in 40 deg weather and 40deg coolant temps, but does not have idle air control hooked up, only needs a tiny bit of throttle to settle it and then i can lift off, and i have a table for coolant temp spark increase, adding timing when its cold to help warm up and artificially raise the idle, that is working great.

but i really dont care to take 15 seconds to hold my throttle worse case scenario to warm up the car.

if this is terrible to you, factory ecu is a better bet, but if you are not sure how to tune closed loop idle tables and the vast and vauge tables in hptuners even on the older 512kb size ecu's you may be worse off...

there are ups and downs no matter what.

but i can plug in a microsquirt and fire the car, and start driving and tuning while i drive extremely fast. im very used to it, and its cheaper, less wires, easier to hook up, doesnt require licensing and i can swap it to other cars very easily etc.

i like that whole aspect for the hot rodding and car stuff i do.

it really boils down to personal preference.

and im not a megasquirt or hptuners expert, just a dude that likes to do burnouts lol

hopefully you gather something useful from all this.

douglee25

Good post. I appreciate your response.

Still kicking around my options as I move forward with my project.

Doug

Tjabo

Sorry denmah, somewhere along the way I missed why you aren't running the IAC off the microsquirt? I ran my 4-wire stepper motor IAC off of my MS2/Extra and MS3. It was fantastic.

aknovaman

iTrader: (7)

Micro lacks sufficient number of IO ports to run all coils in wasted spark format and still run IAC.

denmah

iTrader: (2)

yep! thats it, the micro is condensed and does not have everything the ms2 full size board has.