MHP Longtube Headers
#54
Pole Position
Thread Starter
Join Date: Nov 2008
Location: OH
Posts: 320
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Unfortunately the race was delayed due to weather on Friday evening. The original rain date of Friday the 6th was also just cancelled due to the most recent forecast. So it looks like the MIR rental will be Wed the 4th. That happens to be the same day I leave for Abu Dhabi for a week.
I'm looking into renting out ATCO on a weekend or MIR on a weekday (no more weekends available until Nov at MIR!) to track test the LTs/mids before we throw in the new stall converter and retest.
I'll keep everyone posted as I'd like to get a few local IS-Fs out and running.
Thanks
Andy
I'm looking into renting out ATCO on a weekend or MIR on a weekday (no more weekends available until Nov at MIR!) to track test the LTs/mids before we throw in the new stall converter and retest.
I'll keep everyone posted as I'd like to get a few local IS-Fs out and running.
Thanks
Andy
#58
Pole Position
Thread Starter
Join Date: Nov 2008
Location: OH
Posts: 320
Likes: 0
Received 0 Likes
on
0 Posts
#59
Pole Position
Thread Starter
Join Date: Nov 2008
Location: OH
Posts: 320
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Here's a dyno graph from today's session with our LTs and off-road mids compared to before with Filters, Thermalnators, ECU/TCU tuning. All runs done in 5th gear on 93 octane with SAE correction, smoothing set at 5. You can see via the graph that on today's run there was a lack of airflow up top (only one fan was working).
We'll run the car at MIR before adding the 3" catback.
![](http://i145.photobucket.com/albums/r206/Fourcam330/MHPStage1vStage2.jpg)
As you can see previously we were just under 400rwtq most of the curve with a peak of 402rwtq--over 400rwtq from 4900-5000rpm. We now make 400rwtq+ from 3100rpm-6000rpm peaking at 435rwtq @5100rpm. HP now peaks at 6100rpm with 462rwhp on tap (previously 436rwhp@6300rpm)
Previously we made 300rwhp+ from 4000rpm, now we make 300rwhp+ from 3800rpm.
Previously we made 350rwhp+ from 4700rpm, now we make 350rwhp+ from 4400rpm.
Previously we made 400rwhp+ from 5300rpm, now we make 400rwhp+ from 4900rpm+.
Peak gains are 26rwhp/33rwtq (with the stock catback still in place) with huge gains in average horsepower and torque. We expect 480rw SAE in 5th gear on straight 93 with our catback added, and close to 500rw SAE on 100 (with the same tune).
A/F was nice and safe in the low to mid 12s after 4000rpm.
We'll run the car at MIR before adding the 3" catback.
![](http://i145.photobucket.com/albums/r206/Fourcam330/MHPStage1vStage2.jpg)
As you can see previously we were just under 400rwtq most of the curve with a peak of 402rwtq--over 400rwtq from 4900-5000rpm. We now make 400rwtq+ from 3100rpm-6000rpm peaking at 435rwtq @5100rpm. HP now peaks at 6100rpm with 462rwhp on tap (previously 436rwhp@6300rpm)
Previously we made 300rwhp+ from 4000rpm, now we make 300rwhp+ from 3800rpm.
Previously we made 350rwhp+ from 4700rpm, now we make 350rwhp+ from 4400rpm.
Previously we made 400rwhp+ from 5300rpm, now we make 400rwhp+ from 4900rpm+.
Peak gains are 26rwhp/33rwtq (with the stock catback still in place) with huge gains in average horsepower and torque. We expect 480rw SAE in 5th gear on straight 93 with our catback added, and close to 500rw SAE on 100 (with the same tune).
A/F was nice and safe in the low to mid 12s after 4000rpm.
#60
Lead Lap
iTrader: (2)
Join Date: Oct 2008
Location: Ontario, Canada
Posts: 599
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Solid gains, Andy. You must be pleased and anxious to see results at the track with the Merc.
Any plans to test LT's on the F in conjunction with the ECU/TCU upgrade, and intake?
Cheers
Colin.
Any plans to test LT's on the F in conjunction with the ECU/TCU upgrade, and intake?
Cheers
Colin.