IPD plenum is installed!
#16
02-29-2008 | 06:03 PM
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#17
02-29-2008 | 07:00 PM
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The dyno results from RSS's post are interesting. What they show is a significant gain in the 2200 to 5000 rpm range. High rpm gains seem to be minimal. The improvements in the low rpm range are what you will benefit from in real world driving. The plenum may also allow the boost to come on more rapidly.
For about $1500 installed in a $126K+ car, this is very reasonable in cost.
For about $1500 installed in a $126K+ car, this is very reasonable in cost.
#18
02-29-2008 | 07:59 PM
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Believe me, that certainly wasn't intentional on my part.
#20
02-29-2008 | 08:15 PM
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Here are a few pictures of the IPD plenum pre-install
Cast metal
Looking inside, painted and designed with efficient airflow in mind
Compare that with the OEM plastic plenum
Not designed for airflow efficiency
The view of the inside from the top
Close up of my engine compartment with the OEM plenum removed
Engine compartment without OEM plenum
New IPD pleum in place. Notice that the cast metal matches the intake manifold too
Another view of IPD plenum
It took Cantrell Motorsport about 2.5 hours to install the plenum which should be pretty standard for tuner shops everywhere if they know what they're doing.
My initial impressions although done before the ECU has had a chance to relearn the new parameters of the airflow efficiency brought on by the new plenum from IPD/RSS is very good. From a standstill, there's a noticable reduction in turbo lag when moving from a standstill. The engine seems to be slightly more eager to get up to speed. Bottom line is, I'm very happy with this modification and will definitely recommend anyone considering this mod to go ahead and get it. I have no plans to do a dyno at this time since I didn't have a chance to do a pre-dyno test. I should be able to compare stock vs modified soon if Larry gives me the opportunity to do so. I'll give a final report after the ECU has had a chance to adapt.
Cast metal
Looking inside, painted and designed with efficient airflow in mind
Compare that with the OEM plastic plenum
Not designed for airflow efficiency
The view of the inside from the top
Close up of my engine compartment with the OEM plenum removed
Engine compartment without OEM plenum
New IPD pleum in place. Notice that the cast metal matches the intake manifold too
Another view of IPD plenum
It took Cantrell Motorsport about 2.5 hours to install the plenum which should be pretty standard for tuner shops everywhere if they know what they're doing.
My initial impressions although done before the ECU has had a chance to relearn the new parameters of the airflow efficiency brought on by the new plenum from IPD/RSS is very good. From a standstill, there's a noticable reduction in turbo lag when moving from a standstill. The engine seems to be slightly more eager to get up to speed. Bottom line is, I'm very happy with this modification and will definitely recommend anyone considering this mod to go ahead and get it. I have no plans to do a dyno at this time since I didn't have a chance to do a pre-dyno test. I should be able to compare stock vs modified soon if Larry gives me the opportunity to do so. I'll give a final report after the ECU has had a chance to adapt.
BTW, I have the IPD Plenum on my 997tt and absolutely love it. Haven't dynoed it yet, but my butt dyno tells me it's there everytime.
#21
02-29-2008 | 08:22 PM
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GotBoost, it's pretty easy. Go to your Photobucket account, find the image you want to post in the size you'd like. Right click on it, then highlight/copy the address that shows up in the <url>, once you've done that, come back to make a post, click on "go advanced" and then click on the little icon that looks like this 
and paste the address in the dialog box that shows up. That's it. Try it out.
and paste the address in the dialog box that shows up. That's it. Try it out.
#22
02-29-2008 | 08:38 PM
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GotBoost, it's pretty easy. Go to your Photobucket account, find the image you want to post in the size you'd like. Right click on it, then highlight/copy the address that shows up in the <url>, once you've done that, come back to make a post, click on "go advanced" and then click on the little icon that looks like this and paste the address in the dialog box that shows up. That's it. Try it out.
and paste the address in the dialog box that shows up. That's it. Try it out.Mike
#26
03-03-2008 | 04:46 PM
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I was wondering what parts had to be removed in order to get at the stock plenum?
I'm not considering doing this myself, but I was just wondering if this mod would go well with other mods that someone might be considering.
I'm not considering doing this myself, but I was just wondering if this mod would go well with other mods that someone might be considering.
#27
03-03-2008 | 05:14 PM
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Small hands?...(smells like cabbage
)
#29
03-04-2008 | 10:32 AM
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[update]: It's been almost a week since I first got the IPD installed so I've managed to put a few miles in my Turbo since then. I can tell you guys that after about 50 miles, the powerband has noticably changed for the better. Previously there was a slight dip on power delivery going from a stop but that "dip" has disappeared! Although there's still a lag from a complete stop, it's not as apparent as it once was before. The plenum has definitely worked in ensuring a smoother power delivery throughout the powerband. I would give this "mod" two very enthusiastic thumbs up!
#30
03-15-2008 | 05:14 PM
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[quote=RSSGREG;1703585]Greetings 6 Speeders,
We just received the dyno chart below from a customer with a EVT 700 Big Power Kit. It also demonstrates how effective the plenum can be with extensive modifications. (See page one.)
Greg,
This chart doesn't do much for me as you say the plenum here is used with a big power kit and that it demonstrates its' effectiveness with extensive modifications. What does the plenum do without extensive modifications? I suspect very little.
We just received the dyno chart below from a customer with a EVT 700 Big Power Kit. It also demonstrates how effective the plenum can be with extensive modifications. (See page one.)
Greg,
This chart doesn't do much for me as you say the plenum here is used with a big power kit and that it demonstrates its' effectiveness with extensive modifications. What does the plenum do without extensive modifications? I suspect very little.