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Old 02-25-2007, 12:14 AM   #1
99gav6
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Need advice and/or recommendation.

Hello, im looking at soon getting the 3500 ported manifold set from 60degreev6 store, along with a drspeed cai, dhp pcm, and 62mm tb,and running 2.5" pipe cat back into a magnaflow muffler (existing), i was wondering if theres anything special i should be aware of when going about this, also if there could be any conflicts etc... I wish i was more knowledgeable about cars but unfortunatly im not so i come to you guys for advice. Thanks for your time and comments.

This will be for a 99ga se 3.4.
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Old 02-25-2007, 01:07 AM   #2
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personally as far as the pcm goes i would look into a more custom tune, you might try contacting mark from mp racing, site sponsor, who lives in Antioch, IL about that and getting it tuned once the parts are all on.

if you still want the DHP, be sure to tell them what mods you have on the car when you order so they can design the tune specifically for your setup.
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Old 02-25-2007, 09:30 AM   #3
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i would look into a more custom tune, you might try contacting mark from mp racing
Id definitely reccomend a tune from Mark @ MP racing. It's cheaper than the DHP IIRC and he can change pretty much whatever you want because hes there in person the entire time. He tuned my car back a few months ago and Ive been more than happy with the results.
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Old 02-25-2007, 10:43 AM   #4
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Damn, I wish there were somebody around here which could tune my car. Or atleast somebody who is use to working on GAs.
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Old 02-25-2007, 12:27 PM   #5
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Quote:
Originally Posted by 99gav6 View Post
Hello, im looking at soon getting the 3500 ported manifold set from 60degreev6 store, along with a drspeed cai, dhp pcm, and 62mm tb,and running 2.5" pipe cat back into a magnaflow muffler (existing), i was wondering if theres anything special i should be aware of when going about this, also if there could be any conflicts etc... I wish i was more knowledgeable about cars but unfortunatly im not so i come to you guys for advice. Thanks for your time and comments.

This will be for a 99ga se 3.4.


3500 manifold set... do you mean just the upper or both the upper and lower intake? You can use the 3500 upper on the 3400 lower, but in order to use the 3500 lower you also have to use the 3500 cylinder heads. Conversely you can use the 3400 upper on the 3500 lower. Basically the uppers from either engine with fit either lower, but the lower mani must be match with heads from the same engine. Make sure you get the right parts.


DHP pcm should work fine with all those, but you will always get better results from a custom tune. If it's just the 3500 upper you're getting I'd say the setup will still be close to a 3400 so go with the generic pcm. If you get the whole 3500 top end it flows better so you might benefit from a VE tune so I'd get a custom tune. Also I don't believe DHP does custom shipped pcms with changes for specs. You just get the generic pcm or get the tuner and do it yourself.
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Old 02-25-2007, 12:32 PM   #6
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don't you need the 65mm tb + adapter if using the 3500 UIM also?
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Old 02-25-2007, 12:55 PM   #7
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Also I don't believe DHP does custom shipped pcms with changes for specs. You just get the generic pcm or get the tuner and do it yourself.

IIRC if you order directly from dhp you can provide a list of mods done and they can make small tweaks to the generic tune. I'd have to recheck their website to verify.
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Old 02-25-2007, 02:55 PM   #8
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If you are going with the 3500 Plenum (UIM), go with the 65mm TB.

As ArronGTR mentioned the 3500 LIM can only be used with the 3500 heads.... I highly recommend swapping to the complete 3500 top end (Heads,LIM, Plenum) if possible. If you do the 3500 top end swap, you will need a VE tune, the flow and velocity characteristics on the 3500 top end are a drastic improvement over the 3400.

If you want to stick with the 3400 heads, then I suggest a ported 3400 LIM and 3500 plenum with 65mm TB. Also have you considered headers?
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Old 02-25-2007, 07:59 PM   #9
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IIRC if you order directly from dhp you can provide a list of mods done and they can make small tweaks to the generic tune. I'd have to recheck their website to verify.
Here's the page on their site that refers to products and services. http://65.109.52.43/products.htm

It says custom tuning available, but I think that's only either with the powrtuner, or going to see them directly for a custom tune (which they have done before). It doesn't say anything about calling in specs for custom tunes. Honestly, they've done so much less testing on 3100/3400's compared to the 3800 that I don't think they could accurately make a tune based on different mods. They'd be more able to do that with 3800's but I still don't think they do that because of liability. Even if they've tested a huge number of 3800's with similar mods, every car is slightly different and will react differently to the same tune, so they'd have to make it on the "safe" side like their generic pcm and the tune wouldn't really be optimized for that car. In which case you might as well buy the generic pcm or just get the tuner.
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Old 02-25-2007, 11:26 PM   #10
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thanks guys,i was originally thinking of the upper and lower 3500, i guess by the sound of things ill go with just the 3500uim and the 65mm tb with 3400 ported lower, theres a place close to me that can do dyno tunes but i dont know the rate but i dont imagine it would be cheap, ive looked at headers and (from what i remember) the price is a little high (im also paying for college), for the 3400 lower is the "3100/3400 Large Port Lower Intake" from 60degreev6 the part im looking for? and the tb at 60...v6 isnt in stock any other ideas as to where i can get one? actually i think i could talk myself into headers to....well see
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Old 02-25-2007, 11:28 PM   #11
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can by chance anyone give a link to where i can find some headers...thanks for all the help guys
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Old 02-26-2007, 05:01 AM   #12
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www.ssheaders.com
I just finished installing mine on friday. Theyre kind of expensive, but once you put them on the difference in power/sound makes you not feel so bad about spending all of that money!
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Old 02-26-2007, 05:03 AM   #13
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do they make equal length headers, or are there not anybody out there that does that. probably have to get them specially made huh?
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Old 02-26-2007, 07:15 AM   #14
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Quote:
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do they make equal length headers, or are there not anybody out there that does that. probably have to get them specially made huh?
You answered your own question.

When I asked DHP for a custom PCM for my mods it was recommended to me to get a Powrtuner. I have been very happy with this recommendation.
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Old 02-26-2007, 08:10 AM   #15
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If you get the 3500 plenum go with the 65mm, since the opening on the 3500 is 65mm. I went with a pcm from milzy but that was before mp racing, which I prolly woulda went with cause of the price.
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Old 02-26-2007, 11:50 AM   #16
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I'd get headers before the UIM/TB. You'll get more HP from it. If you do get a TB, it's worth waiting until the 60v6 store gets more in, it's a beautiful piece. The headers aren't expensive either, they are pretty reasonable for the industry standard. They are cheaper than the TOG headers were. No one make equal length headers though. The engine layout does not lend itself to that type of design.

Any shop by you with a dyno will not be able to help you tune your car unless they have the proper tuner. Most do not, and even if they do I wouldn't let them unless they have experience tuning your type of car. Most they will be able to do is dyno test your car for hp gains.
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Old 02-26-2007, 12:30 PM   #17
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The tce tb's are beautiful pieces. I had a 65mm and a ported 3400 plenum with the tb side matched to the tb. It was a good combo. I belive milzy is making 65mm tb's soon also but dont know anything more about them.

I wish I coulda got headers. A little too expensive for me at the time and I cant save money for long cause I always end up buying other parts haha.
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Old 02-26-2007, 04:13 PM   #18
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Conversely you can use the 3400 upper on the 3500 lower. Basically the uppers from either engine with fit either lower, but the lower mani must be match with heads from the same engine. Make sure you get the right parts.
Thats perfect. You just answered a question I was thinking about. Is the complete 3500 a direct swap to the 3400? Or is it even worth taking the bottom end too?
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Old 02-26-2007, 05:54 PM   #19
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ok, i looked at the mpracing site and saw the cai which is roughly $50 less then a dr speed one, does the quality compare, i looked for info on the mp version and didnt come up with anything, i might be able to get a deal on headers that would be exciting
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Old 02-26-2007, 06:24 PM   #20
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DS= uses standard worm gear clamps
MPR= uses stainless steel "liner" clamps

DS= undersized K&N standard filter
MPR= S&B Powerstack Inverted Cone Filter

DS= plain silicone couplers
MPR= 3ply polyester reinforced silicone couplers (made by www.Hightempsilicone.com)

Both intakes use 3 pieces of mandrel bent aluminum tubing

taking all of the above in to account I would say our quality is better but I will let others chime in on this
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