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Old 08-18-2009, 11:40 PM   #1
FLAFLIER
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Default New Magnuson Tune Question

I will be installing a 112 Maggie on my 99 FRC. The car has a Lingenfelter top end kit GT2 cam , heads , intake , LG longtube and a B&B cat back , with of course a Lingenfelter tune @384 rwhp.
the question is since I bought the complete system used and the superechips tuner was for a 02 automatic i cant download the initial tune from the tuner , will I be able to gently drive the car to get it Dyno tuned , or will I need to trailer it ? Distance to the Dyno is about 60 miles.
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Old 08-19-2009, 01:07 PM   #2
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I would say yes---If it starts -runs and shifts it should be OK--Of course a must would be to take it easy--Do not get it into Power enrich.---at part throttle it will be in closed loop so it will should be safe as long as there is little or no boost---The headers by installation will richen up the commanded closed loop AFR of 14.68 anywaymaking it quite rich---You may have a "war & peace " script of codes
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Old 08-19-2009, 02:48 PM   #3
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Thanks for the information Blu. sounds like the key to that is try to start , then see what happens from there ? When I make a decision on which dyno turner I use , is an alternative take the computer to that tuner to have him do initial adjustments , then re install to the car, or am I just wasting his and my time ?
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Old 08-19-2009, 05:43 PM   #4
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The problem you may run into would be setting a P1514 and Reduced Power mode with the presence of any boost, and Roots-style blowers produce boost at a very low RPM (compared to centrifugal blowers), so it might be difficult to avoid.

But, since you are already tuned for heads/cam, the table responsible for causing that might already be modified such that it may not be an issue.

Easy enough to try and drive it a few blocks after installation, and see what happens. If you don't hit REP mode in normal driving, then it should be ok to drive it to the tuner.


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Old 08-19-2009, 05:46 PM   #5
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Also, if the Maggie kit came with larger injectors, they would cause a problem too.

Leave your current injectors in place until you get it to the tuner.
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Old 08-20-2009, 02:31 PM   #6
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Yeah the p1514 DTC will put it into a reduced power mode and will only let you drive it 25 MPH or so--and it will run like crap---However--you and reset that code and it will run normal again by turning the ignition on and off 3-4 times---When driving it again you have to really baby it--the more load you put on it will make it set again--the shifts are usually where it will set--If you are just driving around town and not on the freeway--drive it in 2nd the whole time to avoid shifting---
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Old 08-20-2009, 04:47 PM   #7
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So I take it the engine will probably run super rich? Does that meen I will wipe out the o2 sensors?
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Old 08-21-2009, 02:19 PM   #8
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slight chance but as long as the 02 heaters are working and you don't run it too long it should be fine--

PS even in a stock engine while it is in power enrichment the 02's are not being used and the PE afr is pig rich in the 11.0 range-- so it should be ok
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Old 08-24-2009, 03:24 AM   #9
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y2kvert4me and tblue, is correct, i just install FAST 90/90 on my bolt on car, and P1514 was throwing at me the moment u drive a block, otherwise starts fine idles fine, so i bought EFIlive tuner and first thing i did is change 20+% on ETC table, man what a peace of mind.

On a maggie iam 99% sure u will have to be dealt with p1514 code, unless Lpe has modiied that table and increase by certain percentage than u should be ok.

When u get P1514 code u get reduced engine power REP and CEL, car will still run but barely u can limb home if u r few blocks away though, car will down on power big time.

I also bought maggie head unit and now i have to find hood and other maggie parts.
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Old 08-24-2009, 03:24 AM
 
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