Unless there is a massive boost leak somewhere its not likely to be detonating with the stock exhaust and plenum on there. Especially with AFRs like that....

 

I may just limp around until i can get on another dyno. I called the shop and asked a what else they had been dynoing yesterday. They had an s2000 on the dyno before me. With a Header, Cat back, stand alone, and tune it made about 190 hp. That seems really low as well?

 

Yeah the does sound a bit on the low side...Don't most S2Ks dyno in the high 190s low 200s stock? MAybe I'm wrong here..

 

With that said, my base run with only a pop charger was 233.8 and 225 hp. Thats not very far off if any.

 

S2000. No, a catback, standalone, and headers aren't going to make that much of a difference without a SC. They do not make that much power unless FI and even with that you are lucky to make 260-300 WHP.

Not the Dyno. I still believe you may have detonation. Your car can detonate and still have amazing A/F ratios if your timing and voltage are struggling.

Try using 103 to 110 octane. With that the chances of you detonating are slim to none. IF you dyno higher, HELLO, the answer.

M

 

With a stock exhaust and plenum he would be the first ever to detontate like that. Unless there is a boost leak/vacuum leak somewhere he's not likely detonating. But yes that would be yet another way to test that..

 

I may try that out. I have an apt for the 20th a diff dyno. I am going to just put around until then and see what happens. If its still low, then i will have to look into that. If it is infact detonation, what can i do at this point?

 

My car detonates with stock everything.... and bad unless i put race gas

 

OUCH
Even with the UTEC/tune you are detonating on pump gas?

 

Thats interesting...

 

No without the utec even in the car the stock TN tune making my **** detonate its no mystery i have no idea why and multiple sources have seen and heard the detonation. but runs like a champ with race gas =)

 

Utec will fix everything but the car is busy getting some stuff done right now so its down for the moment >=)>

 

I am looking into a UTEC presently, so thats good news. Thanks for your input man.

 

whats up with stage 1.5, i dyno'd last week and hit 350 hp and 375 tq but i realized i had a leak in the plenum due to a piece of the rubber funnel around the oil intake being stuck in between the plenum, i took it out and the difference is not that noticable, i read about all this breaking loose in third and i barley break loose in second with stock tires. but the car is alot faster i've beat a c6 and hung with a zo6. what does detonation sound like?

 

You probably picked up 15-20 hp by fixing the leak but with the total gain you have gotten 20 hp is not going to be mind blowing. I have no problem roasting 1st 2nd and 3rd... And obviously your car is no slouch Stage 1.5 testing has begun but not completed...

 

sand hitting the firewall comes and goes not a constent sound depends how bad, and your af ratio can say all is good but still detonate due to too much timing

 

I put stock tires on the car last week while i waited for lugs to come in for my rims, and it was a handful in 2nd under boost. As the day heated up, obviously grip got better. With 275 ps2's in the rear in second the car spins them slightly under boost. Not like a full on tire boiling spin, but enough to set off the slip sensor.

 

I would try it. It doesn't cost much and can answer your question????

Quick.

M

 

bump to revive thread - Whatever happened with your car Jason?

 

He bought a Utec and had Sharif tune it I think..