Whereas we have 2 Fiero intakes, do to request, we (trueleo.com) are now going to offer a version of our High flow intake for the F Bods also. You can get a lot of info including flow bench #s, dyno charts and more at the above site. These manifolds were designed to allow the 2.8 etc to breath at high rpm and have exceeded our expectations. You can also read user remarks on the Fiero version on 'Pennock's Fiero Forum' Just look for the posting 'hi-flo updates' Sometime within a week or so, we should have pictures of F-bod version up on our site. No single item aside from forced induction or N.O. will provide anywhere near the power gains those manifolds will produce.
I can also be contacted at; rspiderii@aol.com

 

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-reading before posting helps

 

I'm very interested and will await further info.

Dean

 

same here, let us know how much it will be too.

 

Most likely it will cost the same the Fiero manifolds as it will only differ in the S pipe between the TB and Plenium. There's a lot of info and pictures etc on trueleo.com.

 

Good to see you guys posting here! BTW this is the intake I posted earlier. Can't wait to get one on Redraif's car!

 

Please don't think I'm raining on anyone's parade, but....

How did you get 2 dyno runs done in only 18 seconds? Also, according to the graph, max tq was approx 115lbs/ft, but according to the data, it was 188lbs/ft?

I'd like to see how it stacks up to the McKinney manifold...

 

I will let you know Doward!

Hopefully I can get the intake in time for the Gathering. There will be either an on site dyno, or one just up the road! Granted I'm planning quite a few mods to be done all before the Gathering...exhaust upgrade (mandrel bent 3in), multiangle valve job, milling the heads, possible valve change, further head porting, 1.6 roller rockers. We then plan to get a baseline run with all the new mods, before the intake. I would like to get one with just the exhaust upgrade (The change in my last dyno run with the cut out open was astonishing!) Then get another run with the intake! Then we can have a really good comparison on a highly modified car which needs more air!

I will post everything here for comparision sake!

 

Redraif, I gotta warn you that the 3" to the rear is jsust too large and will slow down the gasses toomuch as they cool going that far to the back of the car to exit. 2 1/4"is too small. 2 1/2" will work perfect. Its best to try and shorten the entire length of the rear exit exhaust routing as much as possible with a single direct exit out the rear. I would highly suggest something like this that I am trying to configure with an I-pipe installed muffler 3" round with 2 1/2" in and outs.

These motors are just too small to push the exhaust gases all the way back wihile retaining the het for flow, hence why the cutout worked. By opening up the rear exhaustrt diameter from 2 1/4" all the way to 3" the gasses will slow from the larger volume and actually bottleneck flow and these little motors do not have the cubic inches to push that gas out keeping it hot like the twice the cubic inch V8's that run 3".

3" may be fine at 5k and above but will really hurt the lower rpm because not enough hot gasses outflow to keep the flow moving all the way back. Keep the diameter at 2 1/2", its plently large for flow but not too large to cause a gas cooldown. This is why are cars also seem to run better with a catalytic convertor. The convertor leeps the gasses hot at midpoint and will allow them to escape to the rear faster since they are hot.

Besides, your header y-pipe exit is only 2 1/2" so anything larger is not going to increase flow through that opening when installed after it.

 

Dean is absolutely correct - All you will do, is create a low pressure zone, that will help pull the gas through there quicker, but once out, will actually plug it up.

 

Note the removale of the rear munted muffler with dual exits. This allows for a more rapid exit path of the exhaust gasses to the rear of the car. Our exhausts from the factory are too long for the small motors.

Fiero's do not have this problem with length

 

Trueleo, I check more of the infoon your intake and it looks very promising. I am more interested in the short runner design and am very pleased with the bench flow results.

 

Am91 is running 3" exhaust on his 3.1 (higher compression than Redraif's 3.4, yes), and AFAIK is the quickest 60 degree V6 on this board NA. Considering the additonal head work, increased flow from the new intake and TB, higher lift (will be slightly over .500 with the rockers), a larger y-pipe and that the car will be turbocharged (likely by Christmas), I feel it should be just right. We may be wrong, but considering that there is little comparison between her combination and most others, I don't think anyone can say with any degree of accuracy. Frankly, there is only one way to find out...worst case, we'll have a 3" exhaust that can go on another car.

 

In all honesty, I'm the only one on here that should be running a 3" mandrel exhaust.

AM91's is a little oversized, but remember - he spins 7000rpm - so he is making better use (actually, I think he'd do better with a 2.75" exhaust ) of the extra size of the pipe.

 

First the y-pipe is out! It's being remade! The original had to be modified to work with my subframe conectors anyway! Now I have been told correct me if I'm wrong...(brain is a bit fuzzy today...migraine)...duals sized 2.25 to 2.5 are said to be equivalent to a one 3in pipe sys. My collectors are 2.5...so I will have them each stay 2.5 & then just have the 2.5 duals dump into a 3in pipe!

I have been running exhaust comparisions to 4th gens. The 3.4 guys come stock with 2.5. They upgrade to the SLP cast offs from lt1 and ls1 cars. So they end up running with stock 3.4s on 2.75 in systems. Of which they see a large improvement. A modified 3.4 should flow more then a stock one and would benefit from a larger system! Esp with the increased air intake the car is about to have.

The dyno place said most 4th gens that come in with systems will have a cut out and will rarely see a gain, esp nothing like mine. Mine is excessively restrictive. That is why there was that larger of a gain. Its 2.25 & The freaking crimp bends in it are killing it! I will still be running a cut out with the 3in sys. Heck it has not hurt AMS car! Granted he has higher compression.

Though the fact is until someone tries it we will not know. I have bought the system...its going on...we will see in a few days! The car is getting a custom chip, the new longer runner intake, a larger fuel pump, heads further ported & milled, 1.6 rockers, the valve job...everyone has been saying the car has the mods, but it is not producing the numbers. Well the tune is part of it, but the darn exhaust is the only thing that can explain why a similarly modded car is doing more then mine!

 

Well like Joe said if it does not work...we have 3 other candidates for the system!

 

A cam/heads 3.4 that is being turboed in the near future (and will see a little nitrous in the meantime, once the other issues are sorted out) doesn't need 3" exhaust when a stock 3.1 with a turbo does? Granted, it might be a little big now, but we're trying not to do this twice. Hopefully the chip will be in by next week so we can get a good baseline with the current combo; the exhaust will probably go on next, and we'll document any gain/loss resulting. We'll do the same with the intake, then with the other mods.

 

Who is AFAIK?? I did a search but turned up nothing. What does that 60* run and what does it have done?

 

A heads/cam 3.4L does not flow as much as a 350. a 2.75" exhaust would be good for you, and 3" too much.

Once you turbo it, it MIGHT be beneficial - depending, again, on what airflow you are looking at in the system as a whole - boost, compressor sizing/efficiency, turbine sizing.

I'm running a T61, currently 8psi. I will be running upwards of 16psi - 3" is right where I want to be, for a 6300rpm 3.1L

 

You're joking, right?

 

Sorry...AFAIK-As Far As I know. As far as I know, your 60 is the quickest on the board NA.

It runs pretty crappy right now , but thats with a fairly large cam, 19 lb injectors, and a stock tune. The tuning part is being corrected this week.

 

We both realize it might not be optimal right now...but with boost, it will be. We're trying not to do anything else twice...if there was no plan for boost, we'd go 2 1/2 or 2 3/4.

 

lol....we can all say something dumb once in a while, right?? i've never seen AFAIK mean as far as i know. NOW, i know!

 

If you've read some of what's been stated on the Pennock's Fiero Forum, you probably noticed that we try to match our intakes to your needs. That said, make sure you tel us just what mods you have if any and if you're planning anything in the near future so we can gestemate the best paramitors when we burn your chip. Without having your car on a dyno with a wideband, we can only estimate what should work. Heck, most times when you buy something like this, you don't even get a chip and when you do, 'it's one-burn-fits-all tpye deal. After your install, if you send us dyno results with A/F ratios, we get it even closer. As for that last statement, as of now we're doing that for our customers, but we may charge for it later. We recieved some info from an F-bod fellow wanting our maniflod, he measured for us his hood clearance from the top of the stock intake and he had 21/4". What with build slop etc, can someone check that on there car. I like to see if that's fairly consistant betwen cars.
Thanks

 

That was me, on Redraif's Firebird. It does have a fiberglass RA1 hood (Suncoast), but frankly the inner liner is lower than stock so anything that works with it should work fine on a stock hood as well. Camaro guys could probably get by with a little more runner length. BTW we're sending out the TB and gasket tonight! Can't wait to get the intake!

 

Ford TB went out last night as promised! Car is going to the muff shop today.... it is going under the torch and welder thurs! Will let you know when I get it back how it feels. Going with 3 in mandrel the whole way. Got a flowmaster 2.5 to 3in y-pipe...a 3in cut out...some o2 sensor recievers...and bunches of 3in j-bends and 2.5 inch j-bends for the muff back section. Going to have my same style 4 tips in the center! Can't wait!

 

While we did get info on hood clearance, it was not for a stock hood. Would someone else please use the following simple method on a stock hood to get us those specs. Get a paper towel or TP tube, cut two 1 ¾” sections and then cut one of them up one side. Take that cut one and wrap over the other and tape it. Pull them apart some like a telescope, put it on top of your intake manifold, and close the hood. When you then reopen the hood you’ll find that the hood should have push one into the other. Just measure how long they are now you’ll have the clearance. It’s really easy to do and will only take a couple of minutes. Before we can do any kind of serious production (aside from a few custom manifolds) for the F-bods we need that info.
Thanks

BTW: waiting for that TB redraif and your manifold looks awesume thus far! Can't wait to get it done and post some pictures.

 

SWEET! I so can't wait! Got goose bumps already! Its like christmas or my birthday...hey wait yesterday was my b-day!

 

Any pics yet???

 

No pictures of his special low profile intake yet but you can see pictures of our manifolds on Pennock's Fiero Forum. Just do a search for 'hi-flo update' My son is in the process of moving from one house to another and that means the computer for our trueleo.com website is also in transit, thus I gave you the PFF site. The Fiero and F-bod intakes will differ mainly in the TB neck whereas the Fiero has to make a sharp right turn and then down some, and yours will just drop some.