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Poor Track Performance, AGAIN!

posted by  boostd on  Fri Aug 23 20:47 CST 2002
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Well, made 3 runs at the track tonight, Bla, Bla, Bla!

16.05 @ 87MPH
15.60 @ 89 MPH
15.56 @ 89 MPH

What is the deal! My 98 XC with the IPD ECU and 2000 R dual Exhaust ran 15.40's @ 89 MPH, I now have added:

Ported and Polished intake and exhaust manifolds
Bored TB
Reverse flow I/C piping
Mag. Wires
Bosch super 4's plugs
180 deg thermostat
IPD ECU
2000 V-70 R exhaust
EA HPO Ignition
K&N Panel filter

Well, I am at a LOSS! I have never gone backward like this before when modding a car? The Magazines rated the 98 XC @ 15.90 at 89 MPH BONE Stock! $3000 later I am only .4 seconds quicker and NO MPH improvement!

Any ideas what parts are not working in harmony? Anyone else done similar mods to their car with better results? I am grasping for some order from the disappointing results! Several have said it is the AWD system killing the performance, BUT it should show some improvements!

I might disconnect the rear drive shaft to run in FWD only and see how that does........ Angry at the "claimed" HP gains which were not realized with this car!

Tomorrow I will purge the sadness with a 165+ MPH pushrod blast!

Mike

1987 GT Conv. 522.90 RWHP and 503.30 ft # of torque!!!! God Bless Larocca's!!!!
11.4 AF Ratio
1988 GT 12.40's @ 117 mph, stock except the blower........for now!
1998 V70 XC ECU'ed, R Exhaust, 14 psi! 15.40 @ 89 MPH, Whatever!
2001 Yamaha Raptor......K&N, PRM exhaust, rejetted ++++........Scary fast!
I sell Pro-Flow Products to support my Hobby!








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    Poor Track Performance, AGAIN!

    posted by  wills on  Sat Aug 24 10:54 CST 2002
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    I noticed on both of my IPD cars that the low end was diminished after the ECU change. I was told that in order to recurve ignition for higher boost, the low end was changed. I cured the problem on my R wagon with a MBC, now I run 15 psi constantly. I also did adjust the wastegate up, which works well when you eliminate ECU involvement of boost.

    Wills
    --
    98 R Wagon IPD ECU, 2.5 Dual Exhaust, Dawes MBC, 94 854 turbo, IPD Goodies, 92 740 Rag Wag







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