Supercharged/Turbocharged The increase in air/fuel pressure above atmospheric pressure in the intake system caused by the action of a supercharger or turbocharger attached to an engine.

740s are in

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Old Sep 27, 2004 | 10:00 AM
  #1  
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740s are in

She was flooded very bad afer the swap. I had to put a torch to the plugs to clean them and burn all the fuel off. I let the cylinders sit open for a few hours to air our. She then cranked right up, 0.69 correcfion factor in the e-manage 516cc to 740cc. Idles at 14.7:1afr and revs fine, will test drive her soon. At an actual 5.00v on the Z32 MAF the ECU will only see 3.45v, so I should get some ignition timing advance back as a bonus!
Old Sep 27, 2004 | 10:33 AM
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Originally Posted by MardiGrasMax
0.69 correcfion factor in the e-manage 516cc to 740cc. Idles at 14.7:1afr and revs fine, will test drive her soon.
pretty good that Emanage can idle them and it should be interesting to see how the Emanage handles it when driving.
Old Sep 27, 2004 | 10:43 AM
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wow.. man your taking it to the complete max here.. Good luck
Old Sep 27, 2004 | 11:06 AM
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mardi: just wondering, are you using nismo injectors?
Old Sep 27, 2004 | 11:12 AM
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I am wondering, I know that you are using the JWT program to run the 516cc injectors. Thus using feature on e-manage that correct for bigger injectors, 516-740 to correct. But can e-manage correct if going from 240cc to 740cc with stock ecu?
Old Sep 27, 2004 | 12:33 PM
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Originally Posted by [maxi-overdose]
mardi: just wondering, are you using nismo injectors?
Yes Nismo 740cc
Old Sep 27, 2004 | 12:33 PM
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Originally Posted by SonicDust187
I am wondering, I know that you are using the JWT program to run the 516cc injectors. Thus using feature on e-manage that correct for bigger injectors, 516-740 to correct. But can e-manage correct if going from 240cc to 740cc with stock ecu?
I can give it a try in a bit
Old Sep 27, 2004 | 02:35 PM
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Please do, however after what you said JWT had to do to fix that cold start issue, I'd say the eManage can't by just shortening IPW anymore.

Originally Posted by MardiGrasMax
I can give it a try in a bit
Old Sep 27, 2004 | 02:50 PM
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Another question. If JWT was able to fix the problem with 516cc injectors. Why couldnt htey just do the 740cc program for you? What is your base fuel pressure with the 740cc?
Old Sep 27, 2004 | 02:55 PM
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Can you explain that more please?

Originally Posted by MardiGrasMax
At an actual 5.00v on the Z32 MAF the ECU will only see 3.45v, so I should get some ignition timing advance back as a bonus!
Old Sep 27, 2004 | 05:50 PM
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Originally Posted by SonicDust187
Another question. If JWT was able to fix the problem with 516cc injectors. Why couldnt htey just do the 740cc program for you? What is your base fuel pressure with the 740cc?
They have not done a 740cc program so it would take a long time for them to do the 740cc. The injectors will far outflow the Z32 MAF so I will also need the Ford Lightning MAF. They have only done this set up on Skylines.

Fuel pressure is stock 38psi at idle with vac line atached, 43psi with vac line pulled/
Old Sep 27, 2004 | 05:54 PM
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Originally Posted by IceY2K1
Can you explain that more please?
The ECU is designed to pull timing as boost pressure (read as MAF voltage by the ECU) increases. If the ECU thinks that I am only at 3.6v (perhaps 8psi) it will give me the timing for its 8psi program, this will obviously have less timing advance than if it were reading my true 5v rading at 15 psi of boost.
Old Sep 27, 2004 | 08:59 PM
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If (or when) you go with the Lightning MAF, what TB will you use? Q45? Also, what TB are you using now.
Old Sep 28, 2004 | 05:31 AM
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I have the 3.5L Pathfinder, I will keep that.
Old Sep 28, 2004 | 08:55 AM
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Okay...thanks~!

Originally Posted by MardiGrasMax
The ECU is designed to pull timing as boost pressure (read as MAF voltage by the ECU) increases. If the ECU thinks that I am only at 3.6v (perhaps 8psi) it will give me the timing for its 8psi program, this will obviously have less timing advance than if it were reading my true 5v rading at 15 psi of boost.
Old Sep 30, 2004 | 12:04 PM
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Congratulations Matt! I was wondering if you have done anything to the fuel rail?
Old Sep 30, 2004 | 12:14 PM
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Did you try cold starting with the stock ECU and eManage yet?
Old Sep 30, 2004 | 01:22 PM
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Nigel,
I have been considering a duel feed set up, instead of the loop through. I dont think its necessary just yet. with the built 3.5L (somday ) it will be. Just split the feed line into both rails and return them itno my dual port requlator I already have with just one port in use.

Ice,
Not yet, it will be a while, work has been hell latley.
Old Sep 30, 2004 | 04:17 PM
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Smart move! I thought of doing that exact thing myself,but I am not even close to outflowing fuel rail yet.

Originally Posted by MardiGrasMax
Nigel,
I have been considering a duel feed set up, instead of the loop through. I dont think its necessary just yet. with the built 3.5L (somday ) it will be. Just split the feed line into both rails and return them itno my dual port requlator I already have with just one port in use.

.
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