dyno tuning guesses

[Storm728]

Ive got an 04 5 speed with 50k miles. Mods include bassani or x. Magnaflow catback. Kn intake. 97 cobra intake cams and a handheld bama email tune. What do you guys think i will initially put down based on these

[WNTAMACH1]

304/318 on a dynojet.

[C-dub]

310/320 tops, but lower do to the box tune

[Storm728]

and with a dyno tune what do you think

[Mach828]

311/308, dynojet, with the tune.

Tell your tuner to email you the run file from the dyno graph.

[Storm728]

really that low even with the cams? i thought they were like a 10-20whp given. how much do you think midlengths would benefit

[1badautogt]

Honestly with those cams I'm expecting horsepower to be higher than torque not the other way around like everyone else listed..

[Mach828]

Originally Posted by 1badautogt

Honestly with those cams I'm expecting horsepower to be higher than torque not the other way around like everyone else listed..

I guessed hp higher than torque. Here is what mine made with 90mm MAF, 3" RAI, Offroad Prochamber, Borla Catback, 4.10 gears, E70 tune (doesn't really help since it didn't pick up more power with a lot of timing), and ported throttlebody.

Originally Posted by Storm728

really that low even with the cams? i thought they were like a 10-20whp given. how much do you think midlengths would benefit

They give you 20hp peak exactly, and shift peak hp from 5,000 rpms to about 6,000rpms. If your still on stock gears maybe you'll dyno a little higher than my guess. But I think you'll need headers (go with the 1 3/4", and 3" midpipe) to make over 320, and a shortrunner intake to make more than 330.

[Storm728]

What do you recommend for headers. Keeping in mind im lowered as well as id like to install without dropping the crossmember out. Midlengths? As well who has an offering for a 3" mid

[Mach828]

There aren't any 4.6 dohc headers you can install without removing the stock K member.

[C-dub]

Originally Posted by Storm728

What do you recommend for headers. Keeping in mind im lowered as well as id like to install without dropping the crossmember out. Midlengths? As well who has an offering for a 3" mid

mid's are a waste of money. go kook's long tubes

[WNTAMACH1]

Arh, stainless works, kooks for 3" collector or get mac, bbk, pacesetter for cheap. You're dropping the k regardless.

[Storm728]

Originally Posted by C-dub

mid's are a waste of money. go kook's long tubes

keeping in mind im cost sensitive. aka a poor bastard. in what sense are mids a waste ive heard from nasvt that the difference is miniscule.

[WNTAMACH1]

Just find some used lt's.

[Mach828]

I would classify as a poor bastard too lol. I went with some flowtech headers I picked up used. Headers, midpipe, gasket, for $300 shipped.

Used parts, sales, and off brand parts have built my car on a low budget.

[Storm728]

how was the install

[WNTAMACH1]

Originally Posted by Mach828

I would classify as a poor bastard too lol. I went with some flowtech headers I picked up used. Headers, midpipe, gasket, for $300 shipped.

Used parts, sales, and off brand parts have built my car on a low budget.

Mine too. I got lt, mid, sct maf for 600. 1200 value.

[djmanny]

i have pacesetters and new they were 282 on ebay, everybody criticizes these headers but they r performing quite well and rumor is on dyno these headers r the best to get the most hp due to diameter size on the tubes

[C-dub]

Originally Posted by Storm728

keeping in mind im cost sensitive. aka a poor bastard. in what sense are mids a waste ive heard from nasvt that the difference is miniscule.

i'm running bassani mid's put them on back in 03 made little to no power. do a search and read for yourself on the headers. check over on corral for used parts, lots to be found

[Storm728]

could you point me toward a thread. i cant find anything reprimanding them

[lil devil]

I gained about 13 at the wheels with my bassani midlegnths and o/r x. Install is a PITA. They do tuck up good though. Bassani claims you can remove the tranny with them still in place. You can't...unless you do a few minor modifications during install. I just replaced my clutch and learned this, but next time I will have no problem. If buying new I would definately skip them and get longtubes. I got a fairly decent deal on mine used, so I would shop used.

[Storm728]

with just the x you should get more than 13 youre saying you got a total of 13 with both

[Mach828]

If your switching from stock manifolds and a stock midpipe; to long tubes and an off road x pipe, I wouldn't expect anything more than 12hp-20hp.

[Storm728]

already have a midpipe it would be headers alone

[Mach828]

Originally Posted by Storm728

already have a midpipe it would be headers alone

Long tubes and o/r x pipe in red, stock manifolds and o/r prochamber in green.

Only other change was that I switched from 4.10 gears to 4.56 gears. Tuner was guessing a 5% loss on the dyno due to the gears, which sounds about right.

That would put me at 329/317. So that nets a gain of about 15hp/9tq. That might be a little generous, If it was 4%, that would put me at 326/314 (gain of 12hp/3tq)

Judging by the shape of the graph, the LT really help it breathe up top. Since the gap between the two curves really narrows down after 5,300rpms.