joe88gta

iTrader: (1)

My 305tpi GTA supercharged with 8-9 psi boost ran a pisspoor 14.43 at 95.79! I think i am having the same problem that they had in car craft a year ago , There answer was custom chip and injectors . What do you guys think?

Brian K

What was your time before the super? What do you have to compare it to? low 14's is not bad on a 305, I figure witha super you should be high 13's...

What was your 60'
What was your 330'

Could it be a traction issue?


[This message has been edited by Brian K (edited July 19, 2001).]

joe88gta

iTrader: (1)

three runs , never ran it before . Traction is a big problem indeed but not the only.

1. 60' 2.144 330 6.042 14.430 at 95.79
2. 2.060 6.117 14.775 at 93.10
3. 2.432 6.351 14.700 at 98.59

The last run felt the best and the second felt very wrong

joe88gta

iTrader: (1)

Car craft there car was a 305tpi camaro and after the chip and injectors the ran an uncorrected 13.5 at a track in Denver so where i live which is below sealevel i should run quicker. Also there car had a 100k on it i have only 60k and i also have a 2220 stall converter and msd ignition and a few other small mods including a shif kit .

Justin 87 GTA

iTrader: (3)

figure in a 1.8 60ft time, and w/ 98 mph and some tuning, you should hit 13.8. Be sure the car is cool, your O2's are right and you are shifting right. Half of the problem lies in your driving. no offense. I know I can drive that car into the 13's. learn how to launch. good luck

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SUPERCHARGED 87 GTA: Blk/Gld w/Superam, 355cid Trickflows, forged pistons 9.5:1. Auto 2,600 stall, 3.45 9 bolt disc, Best ET (Nat. Asp.): 13.567 @ 101.900 w/ a poor 60ft. Best mph: 104.3 -*100% NYS emissions legal*
http:// www.community.webtv.net/munks87/JustinsGTApage.com
VORTECH S-TRIM, Install completed 7/9/01: 10 & 15 LB. PULLEYS, HKS race bypass, Custom cold air, Swapped to serpentine. Best ET: High 11'S I Hope.

Willie

iTrader: (1)

Not yet. Four questions/comments:

1) I've run my times with stock 19# injectors.

2) Do you have scan data at WOT? I'd like to see your engine load, airflow, block learn, integrator, air temp, coolant temp, knock retard and total timing. Analyzing these parameters is the first logical step.

3) What is your fuel pressure at WOT? You could be running way to lean or way to rich.

4) Have you confirmed boost values with a gauge?

------------------
Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
Former Paxton (6-psig) with 50-hp nitrous: 12.043 @ 112.86 mph.
ATI D1SC (10-psig): 12.056 @ 116.62 mph.
All stats are altitude corrected for 3,100 feet using NHRA's Altitude Correction Table.

http://willie.camaro-firebird.org/

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

joe88gta

iTrader: (1)

I have a boost gauge in the car ,so i know that . I will try to get out and put the scan tool on it . Thanks for your help
I also have camaro 22lb injectors in it now. My 19 were having some problems ,with hot starts so i got these ones cheap and i researched that the computer will compensate for up to 20% increase.

[This message has been edited by joe88gta (edited July 20, 2001).]

joe88gta

iTrader: (1)

i used the scan tool a little while ago and got some numbers.....

Coolant temp----- 178.7
TPS --------3.88
RPM-------4408
O2 -------884 mv
o2 cross counts----227
block learn -----127
Intergrator------128
ehgine load-----227
manifold air temp-----95.0
spark advance-----32.2
knock retard-----5
inj pluse-----12.5ms
map sensor------1.76 v
mass air flow----207 gr/sec

I will run it again later tonight when i can really get on it. I want to it above 5000rpm , i think that is where i am going to see the most problems.