traction issues

[originalsin]

post up and major power adders, suspension spec and tire specs and what kind of traction issues you have

mine from last season

stock except intake and exhuast 12psi

stock suspension except vlsd

yokohama es100's 205/55/15

spun thru 1st lauching at like 3500 (need to work on that), spun some into 2nd and sometimes into 3rd

[jt15833]

stock

stock suspension except vlsd

205/55/15

spin in first pretty easy, dont like it I think fat tires is the only solution

[Akihisa]

235/40-17 ES100's

Welded stock diff

555 injectors, z32 MAF, tuned ecu,HKS gt2540r

1st is useless if you romp on it. 2nd breaks loose easy if you don't slowly bring in the boost.. 3rd only if you pop the clutch.

[OmarM]

245/50/16 kuhmo ecstas15 t28 12psi, 370cc injectors(bad)4.36 vlsd, stechs,kyb gr2s. some urethane bushings here and there

launch at 4k little to no wheelspin, 2nd little wheelspin as well, The thing hooks really good. Waiting for bigger injectors, rom tune, race gas, 18pounds, and take it to the track on ET Streets. Looking for a low 12 at 110

[float_6969]

205/50/16 Potenza Re01S15 T28 7psi (boost creep starting at 4K. Hits 14psi by 6K)555cc injectors, vlsd, stock suspensionSpins 1st and 2nd, chirps 3rd.

Boost creep owns me. Car sucks to drive actually....

Pulling the turbo tonight to port the wastegate tonight.

[OmarM]

get a forge motorsport wastegate for that turbo, i have it and it works flawlessly and its completely polished just like my compressor housing, bling bling, lol.

[mikesim]

HKS GT2530R turbo, DSM 450cc injectors, Q45 MAFS, S-AFC 2, Greddy R-spl fmic, walbro 255 pump, currently not tuned, running 9psi.

with 225/50/16 tires i could roast them if i wanted, but always shifted earlier and used less throttle.

with 17X9 and 245/40 tires and 14-15psi, i hope i don't roast them as easily, but traction issues usually have to do more with the driver and throttle modulation than anything else.

you don't see the top gear guys driving TVRs flat out around a track, cuz physically impossible. good footwork = old school traction control.

[Akihisa]

Do you have any idle isues with running the q45 MAF. I had one but it barely got any airflow signal under 1200rpm causng the idle to fluctuate about 400 rpm. I had to swith to a 300zx MAF.

[mikesim]

Do you have any idle isues with running the q45 MAF. I had one but it barely got any airflow signal under 1200rpm causng the idle to fluctuate about 400 rpm. I had to swith to a 300zx MAF.

i actually haven't put it in yet, as i'm running 9psi and not maxing out the stock MAFS. i don't look forward to tuning it, but i've read it up, and hopefully i should be able to get it to work properly.

if all else fails, i'll be looking for a Z32 maf as well.

[float_6969]

I thought a Z32 MAFS was good to 500hp? Why would you want/need a Q45 MAFS? Not critiquing, just inquiring...

[mikesim]

I thought a Z32 MAFS was good to 500hp? Why would you want/need a Q45 MAFS? Not critiquing, just inquiring...

the Q45 is supposed to have finer resolution, but the Z32 is easier to tune and can take more HP. i got the Q45 maf out of ignorance actually. it was cheap on ebay and i didn't know at the time it would be hard to tune for.

[r34 gtr]

ive got a gt28r at 10-12psi (depending on outside temp) 510cc injectors, intake, exahust, all that jazz. 235/40/17 wrapped in non-dot approved bridgestones. i can spin them into 4th if im really trying. since boost doesnt come until 3600+ its never a problem unless i launch it.

i can also chirp them shifting down to 2nd, and if i shift into 2nd at high revs it just tears them loose. i always match the revs too so its not like im just kicking the clutch out.

finally, how the hell are you not maxing out the stock MAFS with that beast gt2530r? at 10psi on my gt28 i was pegging the hell out of mine. i could hit 100% at 5500 in 3rd.

- tim

[mikesim]

ive got a gt28r at 10-12psi (depending on outside temp) 510cc injectors, intake, exahust, all that jazz. 235/40/17 wrapped in non-dot approved bridgestones. i can spin them into 4th if im really trying. since boost doesnt come until 3600+ its never a problem unless i launch it.

i can also chirp them shifting down to 2nd, and if i shift into 2nd at high revs it just tears them loose. i always match the revs too so its not like im just kicking the clutch out.

finally, how the hell are you not maxing out the stock MAFS with that beast gt2530r? at 10psi on my gt28 i was pegging the hell out of mine. i could hit 100% at 5500 in 3rd.

- tim

the S-AFC is seeing 92-95% on 9psi, so it's close, but not hitting it. i'm not getting any creep from the WG, but it does seem like i have a boost leak somewhere. i know that the hard line going behind the block to the intake recirculation has a weak vacuum, and when i had the WG teed to that, it wasn't opening. i'm going to replace all my vacuum hoses come spring.