KStromberg
VIII looking for 8s
We may all be old, but not all of us are slow.
Uh oh, I heard your ride is going to get "bossy".
Gen 2 - Cobra Intake Swap
- Thread starter DLF
- Start date
Uh oh, I heard your ride is going to get "bossy".
We may all be old, but not all of us are slow.
Yeah, what he said.
Seriously though, I am curious about the throttle response feel at the pedal. I'm sure the wide open throttle is better, but what about regular fast driving?
After driving gen 1's and gen 2's, I personally like the throttle response of the gen 1's. It just feels quicker.
How does the Cobra intake compare to the 2 originals?
DLF
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Yeah, what he said.
Seriously though, I am curious about the throttle response feel at the pedal. I'm sure the wide open throttle is better, but what about regular fast driving?
After driving gen 1's and gen 2's, I personally like the throttle response of the gen 1's. It just feels quicker.
How does the Cobra intake compare to the 2 originals?
Well, I've never driven a Gen 1 in anger, and any automatic is going to feel like a pig to me as my 12 second cars are both manuals.
And, honestly, I don't notice much of a difference in throttle response. You've got to remember that I've got a fairly loose TC (~3,600), which just kiils tip-in response. The car feels a bit stronger up top, but nothing dramatic. I'll know for sure once I get it on the track.
What I had said earlier was a comment about off-idle response, which initially was like a light switch due to the Accufab, until I adjusted my tune.
KStromberg
VIII looking for 8s
Here's my two cents. I know what Doug is saying about the throttle response. I really didn't notice much difference until the tachometer was at 5K+ rpms. For me that is an improvement though because the stock intake is pretty much dead at 5500 rpms. Personally, I noticed a substantial difference at 5500+ rpms. By this, I mean that the tires chirp 3rd gear which I never had with the stock intake. I had the channels opened up between the runners on the lower plenum which was about the extent of the "porting" that was done. Not much you can do there unless you want to hack the intake apart and I don't have enough power for that to help me but rather hurt me probably(speaking of shortened runners). If I was to make an educated guess (not a transmission tuning thread type guess either
) I would say that the power curve on the dyno is higher and reaches a decent bit past 6000 rpms.Doug, I am excited to see your new timeslips. I'm certain you have a Gen2 in the 13s now. Realistically, you've already been a tenth away and I'm certain the intake is worth at least that but probably more. The polished accufab is a nice touch.
Let me throw a guess out there. 13.8 no problem
KStromberg
VIII looking for 8s
DLF
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DLF
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Here's the actual Dyno sheet.
The loops in the final (red) trace are due to the TC locking. The 269.49 torque reading is a spike, the actual torque on that run is closer to 248.
I've since changed the tune so the TC locks sooner in 3rd gear then it did during this run. Still optimizing the trans settings. :wink:
The loops in the final (red) trace are due to the TC locking. The 269.49 torque reading is a spike, the actual torque on that run is closer to 248.
I've since changed the tune so the TC locks sooner in 3rd gear then it did during this run. Still optimizing the trans settings. :wink:
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DLF
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And, the timeslip.
DA was 1,464 ft., hot and humid. Adjusted for the DA, times would be somewhere in the 13.6's.
I had to adjust the tune a bit, I started out hitting the rev limiter (@ 7K) on the 1-2 shift as things are happening a bit quicker now. And I had to adjust the MAF Transfer Function a bit to compensate for the injector change.
I don't think the improvement is due entirely to the Cobra intake, I've also figured out quite a bit recently about tuning a Gen 2.
DA was 1,464 ft., hot and humid. Adjusted for the DA, times would be somewhere in the 13.6's.
I had to adjust the tune a bit, I started out hitting the rev limiter (@ 7K) on the 1-2 shift as things are happening a bit quicker now. And I had to adjust the MAF Transfer Function a bit to compensate for the injector change.
I don't think the improvement is due entirely to the Cobra intake, I've also figured out quite a bit recently about tuning a Gen 2.
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KStromberg
VIII looking for 8s
Were you running drag radials?
DLF
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DLF
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Well, thank you very much for the kind words. I try hard to do things the best way that I can figure out.
A little background....
I've had the deletes in my '98 cobra for over 10 years and I know how to tune for it. As I recall, I lost ~8 RWHP under 3K and picked up ~25 RWHP over 5K (deletes and a short runner intake).
Having said that...
With gears, a high stall TC, and the correct tune, you probably won't even know the IMRC's are missing in a Gen 2. There's no difference in the driveability, maybe just a bit rougher idle. It's possible that I lost a bit below 3K, but if so, I can't feel it. As soon as I mash the pedal, I'm over 3K anyway.
However, I wouldn't advise using deletes in an otherwise stock car.
I wasn't certain if the results would be different with an automatic as opposed to the 6-speed in my Cobra, but, at least so far, I'm pleased with the outcome.
FYI, The IMRC's open @ 3K in the stock Gen 2 tune.
Ford nut
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Thanks DLF, great and useful information.
I am still in part collection mode.
I am leaning towards the delete, just need a higher stall
ahhh the joys of OBD-II
I am still in part collection mode.
I am leaning towards the delete, just need a higher stall
ahhh the joys of OBD-II