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| The Turbo 3500 F23 swap (Page 17/80) |
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Joseph Upson
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FEB 10, 01:17 PM
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| quote | Originally posted by ericjon262:
you have to manually change the Map sensor values. My main concern right now, is that I have a 3 bar MAP sensor, and I'm told that some of the PCMs similar to what I'm using can only read up to 2 bar... Tiny tuner let me input the values for the 3 bar though, so we will see what happens when I plug everything in and program it... I'll hook the sensor up to my air compressor and run a scan (with the engine off) and see if it stops reading at 2 BAR. if I have to, I'll import the L67 values for it's 2 BAR, and get a 2 BAR MAP sensor.
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I find it hard to believe it's that simple, I get the idea of scaling the MAP values which basically requires the natural aspiration portion be condensed into half of the MAP table for a 2 bar, however it stands to reason that you would need to do this for every MAP associated table in the code or risk problems with fueling and spark advance as a result. I've run boost many times in the past with a 1 bar MAP sensor, but I wouldn't dare try it with a 3 bar MAP in non boost related code, the reason being the 3 bar MAP has even less resolution than the 2 bar MAP. Make sure you are working with someone that has succeeded at doing this with the code.
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ericjon262
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FEB 10, 04:27 PM
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. [This message has been edited by ericjon262 (edited 09-11-2022).]
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Hudini
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FEB 10, 08:12 PM
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You really need expansion joints between the logs and the turbo. I did not use them on my first exhaust and each heat/cool cycle would bend the exhaust and turbo until things started breaking.
This is the 2nd attempt. It works great now.
This is how I found them in the junkyard. They are found on crossover pipes on front wheel drive GM cars.
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ericjon262
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FEB 10, 08:29 PM
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. [This message has been edited by ericjon262 (edited 09-11-2022).]
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ericjon262
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FEB 10, 09:41 PM
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. [This message has been edited by ericjon262 (edited 09-11-2022).]
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ericjon262
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FEB 11, 12:14 AM
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. [This message has been edited by ericjon262 (edited 09-11-2022).]
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Joseph Upson
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FEB 11, 05:42 AM
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Buy the size you need, they're available from the same place you purchased your tubing. Aftermarket expansion joints are usually sturdier than OE because they also have a braided steel mesh around the bellows. Although GM has done a better job with them by adding a sheet metal support underneath, the Turbo Grand Prix bellows had a history of cracking and coming apart. If you want to use OE which I've never had a problem with like what's pictured above, get the crossover from the 3500 and up cars as they are larger than what was placed on the 3400, ~1.75-2.00" if needed, I didn't measure it. You may also find the better joint in the exhaust pipe of some imports as they are usually braided also.
It's 4" long, the camera is bending the picture in auto focus, it also has an inner interlocking liner for smooth airflow through it as opposed to exposed louvers.
 [This message has been edited by Joseph Upson (edited 02-11-2013).]
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Joseph Upson
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FEB 11, 05:56 AM
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| quote | Originally posted by ericjon262:
Here are the changes I have made to the 3400 bin so far...
1 imported LS1 MAF(dhp)
2 Change IFR (DHP)(old/new)insert percent in DHP
3 trans type 0(manual) (tt)
4 always use default baro set to 1 (TT)
5 set default max map to 300 (tt)
6 set map sensor scaler to 300 (TT)
7 set map sensor offset to -11.25 (TT)
8 number of cat tests per trip set to 0 (TT)
9 set p0135 p0137 p0138 p0140 p0141 p0401 and p1406 to no reporting (3) (DHP)
10 set high RPM threshold to 8500 RPM(TT)
11 set torque abuse drive injector disable to 0 under tq mngmnt>fuel(tt)
12 high rpm fuel cut set to 8500(TT)
13 set tq abuse pn inj dsbl to 0 (TT)
14 set tq abuse drv inj dsabl to 0 (TT)
15 set TCS inj dsbl to 0 on all TCS levels (TT)
16 set dsbl all inj hgh mph to 255(TT)
17 set dsbl 1 inj hgh mph to 255(TT)
18 set dsbl 2 inj hgh mph to 255(TT)
19 set TCS nbl to 300 (TT)
20 set tq diff score inj dsbl to 0 (TT)
21 TCS sprk rtrd to 0 (TT)
22 set min rpm for mph shtff to 9000 (TT)
23 TCS xtr sprk rtrd to 0 (TT)
24 tq abuse spd nbl set to 255 (TT)
25 tq abs sprk rtrd set to 0 (TT)
26 tq diff scr rtrd set to 0 (TT)
27 tq abs rpm nbl set to 9000(TT)
28 tq abs TP nbl set to 104/105(TT)
29 EGR air temp dsbl set to 300 (tt)
30 turned off all auto trans related codes(P703, and P705-p785)(DHP)
31 dsbl trans tq redux (TT)
32 bypass extra spk rtrd set to 00 (yes)(TT)
33 dsbl dfco MPH set to 255(TT)
34 dsbl dfco mph CM set to 255 (TT)
35 dfco nbl CT set to 200
36 AIR pmp nbl CT set to 200
Next I'm going to match the P/N idle and RPM settings to the same speeds as the drive settings, because the car won't have a park position. |
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As much struggling as I have done over the years figuring out problems with adjusting boosted 8F, OBD I code, and I'm still learning, I have to say you are juggling broken bottles here. This is a step beyond unorthodox, bordering on the Twilight Zone of tuning. I mistakenly entered the wrong values under PE in the first tune of my engine and crippled it before I ever saw what it could really do. If there is a code mask that you can use designed for boost that's what you should use as this is too risky.
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ericjon262
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FEB 11, 01:11 PM
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. [This message has been edited by ericjon262 (edited 09-11-2022).]
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ericjon262
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FEB 11, 01:21 PM
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. [This message has been edited by ericjon262 (edited 09-11-2022).]
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