baby_ruiner

iTrader: (1)

when i get the dyno i will post it. lots of room for improvement! dynoed 255/245 on DJ. AFR was 14.5 to 4k rmps and 12 after that....

any thoughts? anyone dynoed there n/a cammed car untuned? i want a comparision

gothchick

iTrader: (12)

I forget, but are you UTEC tuned? If so, just adjust fuel to bring the AFRs to 12.8 ~ 13.2.... Once your AFRs are on target, next start tweaking timing.

baby_ruiner

iTrader: (1)

i am running a 0 map now. we didnt have time to tune it bc i did it at 7pm last night. it should be tuned mid march bc im going outa town but i had a rock crack my wind sheild last night so that might hold me back a week bc i need to fix that. i was utec tuned when i was just bolt ons. im going to call tomei and see what afr these cams like, i know some cams like it a lil bit richer.

gothchick

iTrader: (12)

Why not rent some dyno time and just tune it yourself after you figure out where you want your new targets?

Try some different 'safe' AFR/ timing combos. See which configuration makes the most/ smoothest power. Pay careful attention to knock.

baby_ruiner

iTrader: (1)

i trust my tuner, ill let him do it. he lets me put in my 2 cents and im in the car when he does it. plus he usuing him is cheaper then dyno time. last time i paid him 250 and we were on the dyno 6 hrs. the relationship my bf and i have with our shop is very strong and we get amazing hookups on parts and labor, plus his knowledge abou cars is 1000000x greater then mine. i know my car will come off the dyno safe and he will always go in a tweek it for free after the fact

i heart my little vette shop

Frostydc4

iTrader: (3)

What cams are you running again (Tomei 264 or 268? I forgot) and what did you dyno at prior to the cam installation? When I dynoed on my stock map my afr were in the 14's until 6000rpm.

rednezz

iTrader: (1)

I thought you were putting down 280 with boltons on a dynojet?

Anyway here is my untuned dyno and keep in mind this is with a bad coil pack and bad crank sensor.

Nexx

iTrader: (41)

right but he just installed cams. without a tune i would expect lower dyno numbers then before.

rednezz

iTrader: (1)

For him to go from 280 to 255 just by adding cams is a giant loss that he probably will not pick back up by just tuning A/F and timing. I was only able to pick up around 10 rwhp from just tuning A/F and timing. Most of my gains came from adjusting the VTC angles on the intake cam. Even then I don't think can he gain 30+ rwhp with a full tune including the VTC angle advancement by just installing cams. I have a fully built NA engine and with a full tune including VTC gained 32 rwhp from the untuned dyno run.

gothchick

iTrader: (12)

Has anyone ever seen baby_ruiner's 280whp bolton dyno? It'd be nice to see the power curve pre-cams...

rednezz

iTrader: (1)

I haven't seen it but I think he posted that he dyno'ed 280.

collinsGTO

well... SHE dyno'd at 270/265 with bolt on's tuned... untuned with the bolt ons the baseline was 237. so the baseline with bolt on's and cams is 255/245 isnt a bad increase... so i'm estimating mid-high 280s tuned with the cams.


ps, this is her bf... so i know her setup pretty well

aggietsi

Just making sure I'm reading this correctly. You guys basically ditched the "bolt-on" tune when you put in the cams and brought everything back down to stock? That makes sense.

gothchick

iTrader: (12)

No... I think they ditched the bolton tune when they put the cams in. I'd imagine they also kept the boltons...

But I'd still really like to see the pre-cam / post-cam dynos.

aggietsi

I think that's what I said. I don't know why they'd pull off their other mods.

When I say "brought back to stock" I'm talking about the tune.

rednezz

iTrader: (1)

She dyno'd 265 ft-lbs of Torque with just bolt-ons and a tune? Is that a typo? All the fully built NA motors barely hit 260 ft-lbs of Torque and those are all at or near 300 rwhp. I very curious to see what kind of power is being made from 3000 to 6000 rpm.

collinsGTO

higher compression will do that for ya and no, that was not a typo. it was 270/265. this was the same day/dyno chadbee's 2003 350z (in stock form) put down 230/225.

and yes, all the bolt-on's are still there, just put it back to the base map on the utec, so basically she's running on the stock tune/ecu.

and by bolt on's, i mean ALL the bolt ons like intake, headers, test pipes, exhaust, plenum spacer... ok, well everything except underdrive pullies

aggietsi

What compression?

rocks

iTrader: (1)

I would say 10-15whp for the cams. Unless you get really huge cams you wont get more than that. I made over 230whp on a mustang dyno on my low compression engine. That was with only 23 degrees of timing but i have a bad o2 sensor and a manifold leak so ill tune/dyno it one more time after thats fixed before I turbo it. 230 on a mustang should be around 250-265 on a dynojet, not bad for a low compression engine. BTW 14 in midrang and 12.0-11.5 are normal a/f ratios for the stock ecu. With good gas i would run it at 13.2 with about 28-32 degrees of timing advance.

gothchick

iTrader: (12)

Dyno?