[wnta1ss]

Originally Posted by DorkMissile

I would ask you to verify that you are actually monitoring the correct Baro sensor (the added one, or the backfired data from the MAF)

On my car I am using a Banks iGauge, and it shows me both sensors to monitor, and when looking at both, you could see the delta change (both would show the same pressure at idle and low speed, but would deviate farther and farther the faster it went, up until about 100mph where it stopped climbing.

I think it is just an area of high pressure located under the hood. With the ECS kit you take all of the rubber & plastic trim out from around the radiator, core support, headlights and such so I think this could induce a lot more air under the hood than normal.

It was known with Cup cars that there was substantial positive air pressure at the base of the windshield, hence why they have their air intakes up on the cowl.

The DSX harness is supposed to block the MAF's baro wire, and instead uses the extra MAP sensor on the harness to get the baro pressure. That is the purpose of the harness, so the MAF's 'baro' reading should not be available with the DSX harness installed. Remember that with the default Paxton install having the MAF in the passenger side of the intercooler and no breakout, therefore baro reading still coming from the MAF sensor, I did report seeing variations in the 'baro' readings.

As far as airflow into the engine compartment, mine did have the same duct/shroud removals or modifications as yours, since it was the exact same kit (ECS/Paxton) as you have. I ran that setup to just over 125mph and did not see any pressure change going on like you are reporting. My sensor was mounted between the intake manifold and driver's side coil cover, tied to the wiring bundle that is there.

[MP3BOOSTED]

awesome info in here, I also found an issue with my car, the MAF extension harness provided by procharger had 7 out of 8 pins in it. I was able to disect the 8th pin out and plug it in and it fixed the IAT issue i was having as well as my fan staying on high. I get my IAT / Baro breakout harness today and hopefully DSX sends installation instructions as I would like to see where things are best mounted before I drill into my MSD intake.

[parbreak]

Originally Posted by MP3BOOSTED

awesome info in here, I also found an issue with my car, the MAF extension harness provided by procharger had 7 out of 8 pins in it. I was able to disect the 8th pin out and plug it in and it fixed the IAT issue i was having as well as my fan staying on high. I get my IAT / Baro breakout harness today and hopefully DSX sends installation instructions as I would like to see where things are best mounted before I drill into my MSD intake.

Got mine from DSX a few days ago. No install instructions. I did find out the tap is M14X1.50 and you can use a 1/2" drill bit to make the hole. Tested mine on a thick piece of plastic. We will be installing end of the month when we install full LT4 fuel, DSX E85, auxiliary low side pump, meth and converter. It will be a LONG weekend, LOL!!

[MP3BOOSTED]

Originally Posted by parbreak

Got mine from DSX a few days ago. No install instructions. I did find out the tap is M14X1.50 and you can use a 1/2" drill bit to make the hole. Tested mine on a thick piece of plastic. We will be installing end of the month when we install full LT4 fuel, DSX E85, auxiliary low side pump, meth and converter. It will be a LONG weekend, LOL!!

thank you for the info on the TAP, i would say the hardest / confusing part of them all was the METH kit on my end, i got a custom RPM meth kit and with no instructions those wires had me tapping out, had a shop do that for me. I plan on installing the DSX IAT / baro harness this week once i get that tap now. having the MSD intake i believe the best area would be the driver side right after the throttle body. see how it goes.

[parbreak]

Originally Posted by MP3BOOSTED

thank you for the info on the TAP, i would say the hardest / confusing part of them all was the METH kit on my end, i got a custom RPM meth kit and with no instructions those wires had me tapping out, had a shop do that for me. I plan on installing the DSX IAT / baro harness this week once i get that tap now. having the MSD intake i believe the best area would be the driver side right after the throttle body. see how it goes.

Post up how the install goes if you get a chance. I ordered the Alky Control MAP based kit. I have to say I was impressed as hell how well the kit was put together. Everything included done to wire ties and heat shrink tape.

[MP3BOOSTED]

Originally Posted by parbreak

Post up how the install goes if you get a chance. I ordered the Alky Control MAP based kit. I have to say I was impressed as hell how well the kit was put together. Everything included done to wire ties and heat shrink tape.

i will, I might just record me doing it and post it up for reference. i was going to go alky but i didn't like its mounting on the side of the fender so i went with RPM as it seemed to be a cleaner install. If i could go back i'd go alky all the way. There was some key things missing with RPM's kit. the DSX aux pump came with crazy good instructions btw, super simple install.

[parbreak]

Originally Posted by MP3BOOSTED

i will, I might just record me doing it and post it up for reference. i was going to go alky but i didn't like its mounting on the side of the fender so i went with RPM as it seemed to be a cleaner install. If i could go back i'd go alky all the way. There was some key things missing with RPM's kit. the DSX aux pump came with crazy good instructions btw, super simple install.

Yeah a video of install would be great.

[DapperDan]

Originally Posted by parbreak

Got mine from DSX a few days ago. No install instructions. I did find out the tap is M14X1.50 and you can use a 1/2" drill bit to make the hole. Tested mine on a thick piece of plastic. We will be installing end of the month when we install full LT4 fuel, DSX E85, auxiliary low side pump, meth and converter. It will be a LONG weekend, LOL!!

With a 3.70 pulley I assume. Should have yourself a 9 second car when dialed in

[parbreak]

Originally Posted by DapperDan

With a 3.70 pulley I assume. Should have yourself a 9 second car when dialed in

For the moment we're going to stay with 4" pulley although my tuner says 3.7 should be fine. I want to make sure we are good on fueling first. I am still on stock cam. Also am concerned with dialing up the boost too much with stock pistons and cam.

[TJay74]

If you have sufficient fuel flow and your tuner doesnt go crazy with the timing you should be fine. It is large amounts of timing which cause increased cylinder pressure which causes extra heat and the lack of fuel that cause the cylinder temps to climb, once things get hot the gaps go away and that is when the rings and or pistons start to fail.

[parbreak]

Originally Posted by TJay74

If you have sufficient fuel flow and your tuner doesnt go crazy with the timing you should be fine. It is large amounts of timing which cause increased cylinder pressure which causes extra heat and the lack of fuel that cause the cylinder temps to climb, once things get hot the gaps go away and that is when the rings and or pistons start to fail.

So do you feel pretty safe at the 650 HP level with your mods? I didn't see forged internals so I'm assuming you're still SBE?

[danhr]

Originally Posted by parbreak

For the moment we're going to stay with 4" pulley although my tuner says 3.7 should be fine. I want to make sure we are good on fueling first. I am still on stock cam. Also am concerned with dialing up the boost too much with stock pistons and cam.

You will have enough fuel to go with a 3.7 pulley. Ask me how I know.

[Dysan911]

I was running the 3.7 pulley w/No issues on LT4 Fuel, JMS Bap and E55. Stock Cam. Boost w/headers no cats was right around 9 to 9.5psi at 6500rpm.

[TJay74]

Originally Posted by parbreak

So do you feel pretty safe at the 650 HP level with your mods? I didn't see forged internals so I'm assuming you're still SBE?

Yes, car has been at 650 for well over a year. If I could get to E55'ish it would make more power but for some reason the fuel system doesnt handle much over E45 without dropping below 2500psi on the high side.